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deh umn 20240910 version

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Reviewed-by: Pristromskaia, Margarita <margarita.pristromskaia@t-systems.com>
Co-authored-by: Huijuan, Wang <wanghuijuan738@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-committed-by: Huijuan, Wang <wanghuijuan738@noreply.gitea.eco.tsi-dev.otc-service.com>
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Huijuan, Wang 2024-09-27 14:04:38 +00:00 committed by zuul
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</li>
<li class="ulchildlink"><strong><a href="deh_01_0010.html">Constraints</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0027.html">Comparisons Between ECSs in Resource Pools and ECSs on DeHs</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0027.html">Differences Between ECSs in Resource Pools and ECSs on DeHs</a></strong><br>
</li>
</ul>
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<a name="deh_01_0003"></a><a name="deh_01_0003"></a>
<h1 class="topictitle1">Dedicated Host</h1>
<div id="body1483864743550"><p id="deh_01_0003__p14392170204011">Dedicated Host (DeH) provides dedicated physical hosts to ensure isolation, security, and performance for your ECSs. You can bring your own license (BYOL) to DeH to reduce the costs on software licenses and facilitate the independent management of ECSs. </p>
<div id="body1483864743550"><p id="deh_01_0003__p14392170204011">A Dedicated Host (DeH) is a physical server fully dedicated for your use to ensure isolation, security, and performance for your ECSs. You can bring your own license (BYOL) to DeH to reduce the costs on software licenses and facilitate the independent management of ECSs.</p>
<p id="deh_01_0003__p019918164416"><a href="#deh_01_0003__fig184871050515">Figure 1</a> shows the differences between DeHs and common ECSs.</p>
<div class="fignone" id="deh_01_0003__fig184871050515"><a name="deh_01_0003__fig184871050515"></a><a name="fig184871050515"></a><span class="figcap"><b>Figure 1 </b>Differences between DeHs and common ECSs</span><br><span><img class="vsd" id="deh_01_0003__image1848714565117" src="en-us_image_0161118470.png"></span></div>
<p id="deh_01_0003__p138261730163520">The physical resources of the DeH are not shared with others, while the physical resources of the ECS may be shared with others. You can obtain the detailed information on the DeH, such as sockets, physical cores, CPU type, and memory size. So, you can create ECSs of specified flavors based on the DeH flavor.</p>
<div class="section" id="deh_01_0003__section5808346135016"><h4 class="sectiontitle">ECS Deployment Modes</h4><p id="deh_01_0003__p171801848155020">You can use your DeH resources by the following methods:</p>
<p id="deh_01_0003__p138261730163520">The physical resources of the DeH are not shared with others. You can obtain the detailed information on the DeH, such as sockets, physical cores, CPU type, and memory size. So, you can create ECSs of specified flavors based on the DeH flavor.</p>
<div class="section" id="deh_01_0003__section5808346135016"><h4 class="sectiontitle">ECS Deployment Modes</h4><p id="deh_01_0003__p12505163724215">When deploying an ECS, you can:</p>
<ul id="deh_01_0003__ul3706839172425"><li id="deh_01_0003__li37869255172425">Select a DeH to deploy ECSs.<p id="deh_01_0003__p65040297172429"><a name="deh_01_0003__li37869255172425"></a><a name="li37869255172425"></a>Directly create ECSs on an existing DeH or select a DeH you want to deploy ECSs on when creating ECSs.</p>
</li><li id="deh_01_0003__li58263000172425">Configure the system to automatically deploy the ECS on a DeH.<p id="deh_01_0003__p59360169172432"><a name="deh_01_0003__li58263000172425"></a><a name="li58263000172425"></a>When you create an ECS, select <strong id="deh_01_0003__b842352706102636">Auto Placement</strong> for <strong id="deh_01_0003__b842352706102632">DeH</strong> to configure the system to automatically deploy the ECS on the DeH with the highest available memory.</p>
</li><li id="deh_01_0003__li58263000172425">Configure the system to automatically deploy ECSs on a DeH.<p id="deh_01_0003__p54604270172434"><a name="deh_01_0003__li58263000172425"></a><a name="li58263000172425"></a>Enable <strong id="deh_01_0003__b33209224263">Auto Placement</strong> for DeHs to let the system automatically deploy ECSs on the DeH with the highest available memory based on load balancing requirements.</p>
</li></ul>
<p id="deh_01_0003__p60219662172420">The combination of these two methods guarantees the isolation, security, and regulation compliance for deployed applications, improves resource utilization, and optimizes the ECS performance.</p>
<p id="deh_01_0003__p60219662172420">You can use either of the above methods to deploy ECSs on a DeH. This helps you ensure isolation, security, and compliance for deployed applications, improves resource utilization, and optimizes the ECS performance.</p>
</div>
</div>
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</td>
<td class="cellrowborder" valign="top" width="23.3%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0004__p239317393248">Stable</p>
</td>
<td class="cellrowborder" valign="top" width="54.65%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0004__p163931239182417">The DeH is properly running and can provide services for you.</p>
<td class="cellrowborder" valign="top" width="54.65%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0004__p163931239182417">The DeH is running properly for you to deploy your ECSs.</p>
</td>
</tr>
<tr id="deh_01_0004__row1539315392244"><td class="cellrowborder" valign="top" width="22.05%" headers="mcps1.3.2.2.4.1.1 "><p id="deh_01_0004__p6393139152415">Faulty</p>
</td>
<td class="cellrowborder" valign="top" width="23.3%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0004__p173931639132415">Faulty</p>
</td>
<td class="cellrowborder" valign="top" width="54.65%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0004__p20393183911243">The DeH becomes faulty and cannot provide services. Contact the customer service.</p>
<td class="cellrowborder" valign="top" width="54.65%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0004__p20393183911243">The DeH is faulty and cannot provide services. Contact the customer service.</p>
</td>
</tr>
<tr id="deh_01_0004__row96315281421"><td class="cellrowborder" valign="top" width="22.05%" headers="mcps1.3.2.2.4.1.1 "><p id="deh_01_0004__p1163142818425">Deleted</p>
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<td class="cellrowborder" valign="top" width="23.3%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0004__p186325289421">Intermediate</p>
</td>
<td class="cellrowborder" valign="top" width="54.65%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0004__p8632162874211">The DeH is deleted.</p>
<p id="deh_01_0004__p17596113160">The resources on the DeH will disappear from the DeH console within a few minutes.</p>
<p id="deh_01_0004__p17596113160">The resources on the DeH console will be removed within a few minutes.</p>
</td>
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<h1 class="topictitle1">Overview</h1>
<div id="body1483864743550"><p id="deh_01_0005__p85522012803">The DeH category and type define the DeH configuration and determine the type and number of ECSs you can create on the DeH.</p>
<p id="deh_01_0005__p181717475811">The DeH configuration includes the number of CPUs (sockets), number of physical cores, local storage, hardware configuration (CPU model and memory size), and number of vCPUs. Buy DeHs of desired specifications based on the site requirements.</p>
<p id="deh_01_0005__p1523814104314">Currently, the following DeH categories and types are supported:</p>
<p id="deh_01_0005__p1523814104314">The following DeH categories and types are supported:</p>
<ul id="deh_01_0005__ul1843610910507"><li id="deh_01_0005__li34369935016">General-purpose DeHs</li><li id="deh_01_0005__li1056662583212">General computing-plus DeHs</li><li id="deh_01_0005__li54361693506">Dedicated general-purpose DeHs</li><li id="deh_01_0005__li1436109195018">Memory-optimized DeHs</li><li id="deh_01_0005__li17558171954610">Ultra-high I/O DeHs</li></ul>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table78931175110" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Specifications of s2-medium DeHs</caption><thead align="left"><tr id="deh_01_0006__row18119111125112"><th align="left" class="cellrowborder" valign="top" width="15.998400159984%" id="mcps1.3.2.3.2.6.1.1"><p id="deh_01_0006__p412413115114"><strong id="deh_01_0006__b63891932152511">Flavor Type</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="17.018298170182977%" id="mcps1.3.2.3.2.6.1.2"><p id="deh_01_0006__p112817195115"><strong id="deh_01_0006__b863168444">Number of Sockets</strong></p>
<th align="left" class="cellrowborder" valign="top" width="17.018298170182977%" id="mcps1.3.2.3.2.6.1.2"><p id="deh_01_0006__p112817195115"><strong id="deh_01_0006__b1648001978">Number of Sockets</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="17.948205179482045%" id="mcps1.3.2.3.2.6.1.3"><p id="deh_01_0006__p1013251115119"><strong id="deh_01_0006__b561620591">Number of Cores per Socket</strong></p>
<th align="left" class="cellrowborder" valign="top" width="17.948205179482045%" id="mcps1.3.2.3.2.6.1.3"><p id="deh_01_0006__p1013251115119"><strong id="deh_01_0006__b1705308073">Number of Cores per Socket</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="32.3967603239676%" id="mcps1.3.2.3.2.6.1.4"><p id="deh_01_0006__p31382114519"><strong id="deh_01_0006__b1200589518">Hardware Specifications</strong></p>
<th align="left" class="cellrowborder" valign="top" width="32.3967603239676%" id="mcps1.3.2.3.2.6.1.4"><p id="deh_01_0006__p31382114519"><strong id="deh_01_0006__b1677215571">Hardware Specifications</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="16.638336166383358%" id="mcps1.3.2.3.2.6.1.5"><p id="deh_01_0006__p1614414195115"><strong id="deh_01_0006__b842352706162739">Number of vCPUs</strong></p>
</th>
@ -62,11 +62,11 @@
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table94711979442" frame="border" border="1" rules="all"><caption><b>Table 3 </b>Specifications of s3 DeHs</caption><thead align="left"><tr id="deh_01_0006__row1647216718447"><th align="left" class="cellrowborder" valign="top" width="16%" id="mcps1.3.2.4.2.6.1.1"><p id="deh_01_0006__p1447215714443"><strong id="deh_01_0006__b1012164052511">Flavor Type</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="11%" id="mcps1.3.2.4.2.6.1.2"><p id="deh_01_0006__p1047247104411"><strong id="deh_01_0006__b1742313347">Number of Sockets</strong></p>
<th align="left" class="cellrowborder" valign="top" width="11%" id="mcps1.3.2.4.2.6.1.2"><p id="deh_01_0006__p1047247104411"><strong id="deh_01_0006__b985659809">Number of Sockets</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.000000000000002%" id="mcps1.3.2.4.2.6.1.3"><p id="deh_01_0006__p1247215714441"><strong id="deh_01_0006__b1969453978">Number of Cores per Socket</strong></p>
<th align="left" class="cellrowborder" valign="top" width="14.000000000000002%" id="mcps1.3.2.4.2.6.1.3"><p id="deh_01_0006__p1247215714441"><strong id="deh_01_0006__b1790789714">Number of Cores per Socket</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="48%" id="mcps1.3.2.4.2.6.1.4"><p id="deh_01_0006__p134728713448"><strong id="deh_01_0006__b913054200">Hardware Specifications</strong></p>
<th align="left" class="cellrowborder" valign="top" width="48%" id="mcps1.3.2.4.2.6.1.4"><p id="deh_01_0006__p134728713448"><strong id="deh_01_0006__b291626953">Hardware Specifications</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="11%" id="mcps1.3.2.4.2.6.1.5"><p id="deh_01_0006__p204723714445"><strong id="deh_01_0006__b4758631205616">Number of vCPUs</strong></p>
</th>
@ -78,7 +78,7 @@
</td>
<td class="cellrowborder" valign="top" width="14.000000000000002%" headers="mcps1.3.2.4.2.6.1.3 "><p id="deh_01_0006__p147219784415">26</p>
</td>
<td class="cellrowborder" valign="top" width="48%" headers="mcps1.3.2.4.2.6.1.4 "><ul id="deh_01_0006__ul104721576443"><li id="deh_01_0006__li1247210719442">CPU: Intel Cascade Lake 6278 (frequency: 2.60 GHz, Turbo frequency: 3.50 GHz)</li><li id="deh_01_0006__li44727794410">Memory: 702 GB (or 718,848 MB)</li></ul>
<td class="cellrowborder" valign="top" width="48%" headers="mcps1.3.2.4.2.6.1.4 "><ul id="deh_01_0006__ul104721576443"><li id="deh_01_0006__li1247210719442">CPU: Intel Cascade Lake 6278 (frequency: 2.60 GHz, turbo frequency: 3.50 GHz)</li><li id="deh_01_0006__li44727794410">Memory: 702 GB (or 718,848 MB)</li></ul>
</td>
<td class="cellrowborder" valign="top" width="11%" headers="mcps1.3.2.4.2.6.1.5 "><p id="deh_01_0006__p1147217794413">264</p>
</td>
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</tbody>
</table>
</div>
<div class="note" id="deh_01_0006__note7797104192917"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0006__p379813422911">Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads - CPU overheads) x CPU overcommitment ratio</p>
<ul id="deh_01_0006__ul17887101719589"><li id="deh_01_0006__li3595145255814">s2 DeHs<p id="deh_01_0006__p54454530582"><a name="deh_01_0006__li3595145255814"></a><a name="li3595145255814"></a>vCPUs = (2 x 22 x 2 - 16) x 2 = 144</p>
</li><li id="deh_01_0006__li132342022155515">s2-medium DeHs<p id="deh_01_0006__p38001145145317"><a name="deh_01_0006__li132342022155515"></a><a name="li132342022155515"></a>vCPUs = (2 x 12 x 2 - 12) x 2 = 72</p>
</li><li id="deh_01_0006__li1314405420526">s3 DeHs<p id="deh_01_0006__p1314420541526"><a name="deh_01_0006__li1314405420526"></a><a name="li1314405420526"></a>vCPUs = (2 x 26 x 2 - 16) x 3 = 264</p>
<div class="note" id="deh_01_0006__note7797104192917"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0006__p379813422911">Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads – CPU overheads) x CPU overcommitment ratio</p>
<ul id="deh_01_0006__ul17887101719589"><li id="deh_01_0006__li3595145255814">s2 DeHs<p id="deh_01_0006__p54454530582"><a name="deh_01_0006__li3595145255814"></a><a name="li3595145255814"></a>vCPUs = (2 x 22 x 2 – 16) x 2 = 144</p>
</li><li id="deh_01_0006__li132342022155515">s2-medium DeHs<p id="deh_01_0006__p38001145145317"><a name="deh_01_0006__li132342022155515"></a><a name="li132342022155515"></a>vCPUs = (2 x 12 x 2 – 12) x 2 = 72</p>
</li><li id="deh_01_0006__li1314405420526">s3 DeHs<p id="deh_01_0006__p1314420541526"><a name="deh_01_0006__li1314405420526"></a><a name="li1314405420526"></a>vCPUs = (2 x 26 x 2 – 16) x 3 = 264</p>
</li></ul>
<p id="deh_01_0006__p984212359160"></p>
</div></div>
</div>
<div class="section" id="deh_01_0006__section929425823817"><h4 class="sectiontitle">ECSs Allowed on DeHs</h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table14107132793212" frame="border" border="1" rules="all"><caption><b>Table 4 </b>ECS flavors allowed on s2 DeHs</caption><thead align="left"><tr id="deh_01_0006__row1410920274329"><th align="left" class="cellrowborder" valign="top" width="30.769999999999996%" id="mcps1.3.3.2.2.4.1.1"><p id="deh_01_0006__p9559153919331"><strong id="deh_01_0006__b17931753145318">ECS Flavor</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.2.2.4.1.2"><p id="deh_01_0006__p75612039183315"><strong id="deh_01_0006__b131970876">vCPUs</strong></p>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.2.2.4.1.2"><p id="deh_01_0006__p75612039183315"><strong id="deh_01_0006__b1088004934">vCPUs</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0006__p55643394332"><strong id="deh_01_0006__b1024613352340">Memory (RAM in GB)</strong></p>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0006__p55643394332">Memory (RAM in GiB)</p>
</th>
</tr>
</thead>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table13395161879" frame="border" border="1" rules="all"><caption><b>Table 5 </b>ECS flavors allowed on s2-medium DeHs</caption><thead align="left"><tr id="deh_01_0006__row134131011379"><th align="left" class="cellrowborder" valign="top" width="30.769999999999996%" id="mcps1.3.3.3.2.4.1.1"><p id="deh_01_0006__p174261312079"><strong id="deh_01_0006__b95559817548">ECS Flavor</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.3.2.4.1.2"><p id="deh_01_0006__p1843571678"><strong id="deh_01_0006__b1381285847">vCPUs</strong></p>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.3.2.4.1.2"><p id="deh_01_0006__p1843571678"><strong id="deh_01_0006__b543575086">vCPUs</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.3.2.4.1.3"><p id="deh_01_0006__p6441815715"><strong id="deh_01_0006__b1545125816340">Memory (RAM in GB)</strong></p>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.3.2.4.1.3"><p id="deh_01_0006__p6441815715">Memory (RAM in GiB)</p>
</th>
</tr>
</thead>
@ -455,11 +455,11 @@
</table>
</div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table1364504925012" frame="border" border="1" rules="all"><caption><b>Table 6 </b>ECS flavors allowed on s3 DeHs</caption><thead align="left"><tr id="deh_01_0006__row6646144935011"><th align="left" class="cellrowborder" valign="top" width="30.769999999999996%" id="mcps1.3.3.4.2.4.1.1"><p id="deh_01_0006__p11646104910509"><strong id="deh_01_0006__b276158636">ECS Flavor</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0006__table1364504925012" frame="border" border="1" rules="all"><caption><b>Table 6 </b>ECS flavors allowed on s3 DeHs</caption><thead align="left"><tr id="deh_01_0006__row6646144935011"><th align="left" class="cellrowborder" valign="top" width="30.769999999999996%" id="mcps1.3.3.4.2.4.1.1"><p id="deh_01_0006__p11646104910509"><strong id="deh_01_0006__b1098367691">ECS Flavor</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.4.2.4.1.2"><p id="deh_01_0006__p13646649195017"><strong id="deh_01_0006__b1964873757">vCPUs</strong></p>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.4.2.4.1.2"><p id="deh_01_0006__p13646649195017"><strong id="deh_01_0006__b464084598">vCPUs</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.4.2.4.1.3"><p id="deh_01_0006__p164684985012">Memory (RAM in GB)</p>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.4.2.4.1.3"><p id="deh_01_0006__p164684985012">Memory (RAM in GiB)</p>
</th>
</tr>
</thead>

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<h1 class="topictitle1">Application Scenarios</h1>
<div id="body1483864743551"><ul id="deh_01_0008__ul1217182071614"><li id="deh_01_0008__li817172013163"><strong id="deh_01_0008__b1413414557174">Industries that have high requirements for regulation compliance and security</strong><p id="deh_01_0008__p1226825681414">You can exclusively use a physically isolated host to meet your high compliance and security requirements.</p>
</li><li id="deh_01_0008__li217162011612"><strong id="deh_01_0008__b1222212527178">Tenants that use the Bring Your Own License (BYOL) mode</strong><p id="deh_01_0008__p4838232923645">If you have a licensed OS or software (licensed based on the number of physical sockets or the number of physical cores), you can bring your own license and migrate your services to the cloud platform.</p>
</li><li id="deh_01_0008__li217162011612"><strong id="deh_01_0008__b1222212527178">Tenants who want to use their own licenses</strong><p id="deh_01_0008__p4838232923645">If you have a licensed OS or software (licensed based on the number of physical sockets or the number of physical cores), you can bring your own license and migrate your services to the cloud platform.</p>
</li><li id="deh_01_0008__li223317016284"><strong id="deh_01_0008__b1439104714172">Industries that are extremely sensitive to performance and stability</strong><p id="deh_01_0008__p5524448103111">DeH is ideal for service scenarios with higher requirements on server performance and stability such as finance, securities and gaming applications. DeH guarantees the stability of CPUs and network I/O, ensuring smooth running of applications.</p>
</li><li id="deh_01_0008__li202147396319"><strong id="deh_01_0008__b15549122312492">Independent resource deployment and flexible management</strong><p id="deh_01_0008__p9729124510313">You can create ECSs on a specified DeH and specify your ECS specifications based on the type of DeH you specified. You can migrate ECSs between DeHs or migrate ECSs from public resource pool to a DeH.</p>
</li><li id="deh_01_0008__li202147396319"><strong id="deh_01_0008__b15549122312492">Tenants who want to deploy resources independently and manage them flexibly</strong><p id="deh_01_0008__p9729124510313">You can create ECSs on a specified DeH and specify your ECS specifications based on the type of DeH you specified. You can migrate ECSs between DeHs or migrate ECSs from a public resource pool to a DeH.</p>
</li></ul>
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<h1 class="topictitle1">Permissions</h1>
<div id="body1593394123322"><div class="section" id="deh_01_0009__section3232181255918"><h4 class="sectiontitle">Background</h4><p id="deh_01_0009__p12319338171">If you need to assign different permissions to employees in your enterprise to access your DeH resources, IAM is a good choice for fine-grained permissions management. IAM provides identity authentication, permissions management, and access control, helping you securely manage access to your cloud resources.</p>
<p id="deh_01_0009__p1823118337170">With IAM, you can create IAM users under your account for your employees, and assign permissions to the users to control their access to specific resource types. For example, some software developers in your enterprise need to use DeH but should not be allowed to delete other DeH resources or perform any other high-risk operations. In this scenario, you can create IAM users for the software developers and grant them only the permissions required for using DeH resources.</p>
<p id="deh_01_0009__p15231113310174">If your account does not need individual IAM users for permissions management, you may skip over this chapter.</p>
<p id="deh_01_0009__p72312338172">IAM is free. You pay only for resources purchased using your account. For more information about IAM, see Identity and Access Management User Guide.</p>
<p id="deh_01_0009__p1823118337170">With IAM, you can use your account to create IAM users for your employees, and grant permissions to the users to control their access to specific resource types. For example, some software developers in your enterprise need to use DeH but should not be allowed to delete other DeH resources or perform any other high-risk operations. In this scenario, you can create IAM users for the software developers and grant them only the permissions required for using DeH resources.</p>
<p id="deh_01_0009__p15231113310174">If your account does not require individual IAM users for permissions management, you can skip this section.</p>
<p id="deh_01_0009__p72312338172">IAM can be used free of charge. You pay only for the resources in your account. For more information about IAM, see Identity and Access Management User Guide.</p>
</div>
<div class="section" id="deh_01_0009__section199261247162715"><h4 class="sectiontitle">DeH Permissions</h4><p id="deh_01_0009__p131168521525">By default, new IAM users do not have permissions assigned. You need to add a user to one or more groups, and attach permissions policies or roles to these groups. Users inherit permissions from their groups and can perform specified operations on cloud services.</p>
<div class="section" id="deh_01_0009__section199261247162715"><h4 class="sectiontitle">DeH Permissions</h4><p id="deh_01_0009__p131168521525">New IAM users do not have any permissions assigned by default. You need to first add them to one or more groups and attach policies or roles to these groups. The users then inherit permissions from the groups and can perform specified operations on cloud services based on the permissions they have been assigned.</p>
<p id="deh_01_0009__p197597211154">DeH is a project-level service deployed in specific physical regions. When you grant DeH permissions to a user group, set <strong id="deh_01_0009__b136518303272">Scope</strong> to <strong id="deh_01_0009__b193793307271">Region-specific projects</strong> and then select projects for the permissions to take effect. If you select <strong id="deh_01_0009__b4381830182719">All projects</strong>, the permissions will take effect for the user group in all region-specific projects. When accessing DeH, the users need to switch to a region where they have been authorized to use this service.</p>
<p id="deh_01_0009__p49903504198">You can grant users permissions by using roles and policies.</p>
<ul id="deh_01_0009__ul9659202210"><li id="deh_01_0009__li76293223">Roles: A type of coarse-grained authorization mechanism that defines permissions related to users responsibilities. Only a limited number of service-level roles for authorization are available. If one role has a dependency role required for accessing DeH, assign both roles to the users. Roles are not ideal for fine-grained authorization and secure access control.</li><li id="deh_01_0009__li142701115229">Policies: A fine-grained authorization mechanism that defines permissions required to perform operations on specific cloud resources under certain conditions. This mechanism allows for more flexible policy-based authorization, meeting requirements for secure access control. For example, the account administrator can allow IAM users to perform specified management operations on a type of DeH resources.</li></ul>

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<div id="body1484839453949"></div>
<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="deh_01_0017.html">Querying DeHs</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0017.html">Viewing the Details of a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0018.html">Changing Names of DeHs</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0018.html">Changing the Name of a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0019.html">Configuring Auto Placement for DeHs</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0034.html">Adjusting DeH Resource Quotas</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0020.html">Releasing DeHs</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0020.html">Releasing a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0021.html">Releasing DeHs in Batches</a></strong><br>
</li>

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<a name="deh_01_0017"></a><a name="deh_01_0017"></a>
<h1 class="topictitle1">Querying DeHs</h1>
<h1 class="topictitle1">Viewing the Details of a DeH</h1>
<div id="body1483864743551"><div class="section" id="deh_01_0017__section9864143152219"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0017__p1736311311222">You can view the basic information about a DeH, including the status, total resources, and usage, on the DeH console.</p>
</div>
<div class="section" id="deh_01_0017__section65161568234"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0017__ol1010733142319"><li id="deh_01_0017__li43601711111915">Log in to the management console.</li><li id="deh_01_0017__li20585767111920">Click <span><img id="deh_01_0017__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0017__li1710703152310">Under <strong id="deh_01_0017__b1718795644414">Computing</strong>, click <strong id="deh_01_0017__b15188115694415">Dedicated Host</strong>.<p id="deh_01_0017__p41071831202313">The <strong id="deh_01_0017__b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0017__li537483752315">Locate the target DeH and view the following information:<ul id="deh_01_0017__ul2420467795457"><li id="deh_01_0017__li3107173395457"><strong id="deh_01_0017__b1596241510572">Name</strong>: DeH name</li><li id="deh_01_0017__li312609419556"><strong id="deh_01_0017__b113381318195712">Type</strong>: DeH type</li><li id="deh_01_0017__li2041334495520"><strong id="deh_01_0017__b78702119574">AZ</strong>: AZ where DeHs are located</li><li id="deh_01_0017__li2413949195523"><strong id="deh_01_0017__b1479017816581">Auto Placement</strong>: Whether <strong id="deh_01_0017__b127846710576">Auto Placement</strong> is enabled.</li><li id="deh_01_0017__li1289919695534"><strong id="deh_01_0017__b124101535185714">Status</strong>: DeH status</li><li id="deh_01_0017__li3277281395538"><strong id="deh_01_0017__b18102535812">vCPUs</strong>: Total number of vCPUs and available vCPUs</li><li id="deh_01_0017__li2005853595543"><strong id="deh_01_0017__b1474442812586">Memory</strong>: Total memory and available memory</li><li id="deh_01_0017__li12520309569"><strong id="deh_01_0017__b10949164385818">Sockets</strong>: Number of physical CPU sockets</li><li id="deh_01_0017__li2075672395618"><strong id="deh_01_0017__b1011112755920">Cores</strong>: Number of physical cores.</li></ul>
<div class="section" id="deh_01_0017__section65161568234"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0017__ol1010733142319"><li id="deh_01_0017__li43601711111915">Log in to the management console.</li><li id="deh_01_0017__li25585338111639">Click <span><img id="deh_01_0017__image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0017__li158261623142514">Under <strong id="deh_01_0017__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0017__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0017__deh_01_0013_p110922219152">The <strong id="deh_01_0017__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0017__li537483752315">Locate the target DeH and view the following information:<ul id="deh_01_0017__ul2420467795457"><li id="deh_01_0017__li3107173395457"><strong id="deh_01_0017__b1596241510572">Name</strong>: DeH name</li><li id="deh_01_0017__li312609419556"><strong id="deh_01_0017__b113381318195712">Type</strong>: DeH type</li><li id="deh_01_0017__li2041334495520"><strong id="deh_01_0017__b78702119574">AZ</strong>: AZ where DeHs are located</li><li id="deh_01_0017__li2413949195523"><strong id="deh_01_0017__b1479017816581">Auto Placement</strong>: Whether <strong id="deh_01_0017__b127846710576">Auto Placement</strong> is enabled.</li><li id="deh_01_0017__li1289919695534"><strong id="deh_01_0017__b124101535185714">Status</strong>: DeH status</li><li id="deh_01_0017__li3277281395538"><strong id="deh_01_0017__b18102535812">vCPUs</strong>: Total number of vCPUs and available vCPUs</li><li id="deh_01_0017__li2005853595543"><strong id="deh_01_0017__b1474442812586">Memory(GiB)</strong>: Total memory and available memory</li><li id="deh_01_0017__li12520309569"><strong id="deh_01_0017__b10949164385818">Sockets</strong>: Number of physical CPU sockets</li><li id="deh_01_0017__li2075672395618"><strong id="deh_01_0017__b1011112755920">Cores</strong>: Number of physical cores</li></ul>
</li></ol>
</div>
<div class="section" id="deh_01_0017__section3538653810535"><h4 class="sectiontitle">Related Operations</h4><ul id="deh_01_0017__ul1912022510611"><li id="deh_01_0017__li6391410210611"><a href="deh_01_0018.html">Changing Names of DeHs</a></li><li id="deh_01_0017__li3637249610621"><a href="deh_01_0019.html">Configuring Auto Placement for DeHs</a></li></ul>
<div class="section" id="deh_01_0017__section3538653810535"><h4 class="sectiontitle">Related Operations</h4><ul id="deh_01_0017__ul1912022510611"><li id="deh_01_0017__li6391410210611"><a href="deh_01_0018.html">Changing the Name of a DeH</a></li><li id="deh_01_0017__li3637249610621"><a href="deh_01_0019.html">Configuring Auto Placement for DeHs</a></li></ul>
</div>
</div>
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<h1 class="topictitle1">Changing Names of DeHs</h1>
<div id="body1484531872616"><div class="section" id="deh_01_0018__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0018__p11249561283">Change names of DeHs on the management console.</p>
<h1 class="topictitle1">Changing the Name of a DeH</h1>
<div id="body1484531872616"><div class="section" id="deh_01_0018__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0018__p11249561283">You can change the name of a DeH on the management console.</p>
</div>
<div class="section" id="deh_01_0018__section537104621190"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0018__ol136321101190"><li id="deh_01_0018__li0241456122813">Log in to the management console.</li><li id="deh_01_0018__li6276335811200">Click <span><img id="deh_01_0018__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0018__li102415612815">Under <strong id="deh_01_0018__b359412385418">Computing</strong>, click <strong id="deh_01_0018__b660812381248">Dedicated Host</strong>.<p id="deh_01_0018__p192414564283">The <strong id="deh_01_0018__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0018__section537104621190"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0018__ol136321101190"><li id="deh_01_0018__li0241456122813">Log in to the management console.</li><li id="deh_01_0018__li6276335811200">Click <span><img id="deh_01_0018__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0018__li158261623142514">Under <strong id="deh_01_0018__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0018__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0018__deh_01_0013_p110922219152">The <strong id="deh_01_0018__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0018__li13241956132818">Click the name of the target DeH.<p id="deh_01_0018__p8244567289"><a name="deh_01_0018__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0018__li22611700111339">Change the name and click <span><img id="deh_01_0018__image99921539555" src="en-us_image_0238393801.png"></span>.<p id="deh_01_0018__p13719440111431">If you do not want to change the name, click <span><img id="deh_01_0018__image0321185517218" src="en-us_image_0238393800.png"></span>.</p>
</li><li id="deh_01_0018__li4272510411938">Click <span><img id="deh_01_0018__image684316335412" src="en-us_image_0000001176881132.png"></span> next to the DeH name.<p id="deh_01_0018__p3567223911141">The name becomes editable.</p>

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<h1 class="topictitle1">Configuring Auto Placement for DeHs</h1>
<div id="body1483864743552"><div class="section" id="deh_01_0019__section9864143152219"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0019__p1736311311222">You can configure the auto placement function for each DeH to allow the system to automatically place ECSs on the DeH.</p>
<div id="body1483864743552"><div class="section" id="deh_01_0019__section9864143152219"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0019__p1736311311222">You can enable or disable auto-placement for each DeH to control whether ECSs can be automatically allocated to a DeH.</p>
</div>
<div class="section" id="deh_01_0019__section65161568234"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0019__ol1010733142319"><li id="deh_01_0019__li1710703152310">Log in to the management console.</li><li id="deh_01_0019__li20908108112027">Click <span><img id="deh_01_0019__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0019__li810713142313">Under <strong id="deh_01_0019__b1841412611461">Computing</strong>, click <strong id="deh_01_0019__b3851131121511">Dedicated Host</strong>.<p id="deh_01_0019__p41071831202313">The <strong id="deh_01_0019__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0019__section65161568234"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0019__ol1010733142319"><li id="deh_01_0019__li1710703152310">Log in to the management console.</li><li id="deh_01_0019__li6276335811200">Click <span><img id="deh_01_0019__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0019__li158261623142514">Under <strong id="deh_01_0019__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0019__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0019__deh_01_0013_p110922219152">The <strong id="deh_01_0019__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0019__li537483752315">Click the name of the target DeH and enable or disable <strong id="deh_01_0019__b84235270617048">Auto Placement</strong>.</li></ol>
</div>
<div class="section" id="deh_01_0019__section1818217330243"><h4 class="sectiontitle">Verification</h4><p id="deh_01_0019__p18166193814240">Assume that you have two DeHs with <strong id="deh_01_0019__b15698142012548">Auto Placement</strong> enabled. The <strong id="deh_01_0019__b114565562535">vCPUs</strong> and <strong id="deh_01_0019__b151361790291">Memory (GB)</strong> values of DeH A are <strong id="deh_01_0019__b7576457761">83/100</strong> and <strong id="deh_01_0019__b173721832122919"><strong id="deh_01_0019__b1737253219290">167/232</strong></strong>, and those of DeH B are <strong id="deh_01_0019__b1637363262915">100/100</strong> and <strong id="deh_01_0019__b25280231272">232/232</strong>. When creating an ECS, select <strong id="deh_01_0019__b842352706102636">Auto placement</strong> for <strong id="deh_01_0019__b842352706102632">DeH</strong>. Then the system automatically creates the ECS on DeH B to balance the load among two DeHs.</p>
<div class="section" id="deh_01_0019__section1818217330243"><h4 class="sectiontitle">Verification</h4><p id="deh_01_0019__p18166193814240">Assume that you have two DeHs with <strong id="deh_01_0019__b15698142012548">Auto Placement</strong> enabled. The <strong id="deh_01_0019__b114565562535">vCPUs</strong> and <strong id="deh_01_0019__b151361790291">Memory (GB)</strong> values of DeH A are <strong id="deh_01_0019__b7576457761">83/100</strong> and <strong id="deh_01_0019__b173721832122919"><strong id="deh_01_0019__b1737253219290">167/232</strong></strong>, and those of DeH B are <strong id="deh_01_0019__b1637363262915">100/100</strong> and <strong id="deh_01_0019__b25280231272">232/232</strong>. When creating an ECS, enable <strong id="deh_01_0019__b842352706102636">Auto placement</strong> for <strong id="deh_01_0019__b842352706102632">DeH</strong>. Then the system automatically creates the ECS on DeH B to balance the load among two DeHs.</p>
</div>
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<h1 class="topictitle1">Releasing DeHs</h1>
<div id="body1483864743552"><div class="section" id="deh_01_0020__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0020__p11249561283">Timely release DeHs that are not used. Charging for the released DeHs will be stopped.</p>
<h1 class="topictitle1">Releasing a DeH</h1>
<div id="body1483864743552"><div class="section" id="deh_01_0020__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0020__p11249561283">You can release a DeH if it is no longer in use. Charging for the released DeHs will be stopped.</p>
</div>
<div class="section" id="deh_01_0020__section1062472923205"><h4 class="sectiontitle">Prerequisites</h4><p id="deh_01_0020__p707675423207">Before releasing a DeH, ensure that the DeH is in the <strong id="deh_01_0020__b842352706112523">Normal</strong> or <strong id="deh_01_0020__b842352706112528">Faulty</strong> status and there are no ECSs on it. Otherwise, you cannot release the DeH.</p>
</div>
<div class="section" id="deh_01_0020__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0020__ol1724145632818"><li id="deh_01_0020__li0241456122813">Log in to the management console.</li><li id="deh_01_0020__li5278337711214">Click <span><img id="deh_01_0020__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0020__li102415612815">Under <strong id="deh_01_0020__b726515817475">Computing</strong>, click <strong id="deh_01_0020__b23593116162">Dedicated Host</strong>.<p id="deh_01_0020__p192414564283">The <strong id="deh_01_0020__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0020__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0020__ol1724145632818"><li id="deh_01_0020__li0241456122813">Log in to the management console.</li><li id="deh_01_0020__li5278337711214">Click <span><img id="deh_01_0020__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0020__li158261623142514">Under <strong id="deh_01_0020__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0020__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0020__deh_01_0013_p110922219152">The <strong id="deh_01_0020__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0020__li13241956132818">In the list of DeHs, locate the DeH to be released and click <strong id="deh_01_0020__b842352706152614">Release</strong> in the <strong id="deh_01_0020__b842352706152651">Operation</strong> column.<p id="deh_01_0020__p8244567289">The <strong id="deh_01_0020__b842352706184252">Release DeH</strong> dialog box is displayed.</p>
</li><li id="deh_01_0020__li19241356182817">Click <strong id="deh_01_0020__b522214173819">Yes</strong>.</li></ol>
</div>

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<a name="deh_01_0021"></a><a name="deh_01_0021"></a>
<h1 class="topictitle1">Releasing DeHs in Batches</h1>
<div id="body1483864743552"><div class="section" id="deh_01_0021__section12826723142515"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0021__p78261235257">Timely release DeHs that are not used. Charging for the released DeHs will be stopped.</p>
<div id="body1483864743552"><div class="section" id="deh_01_0021__section12826723142515"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0021__p78261235257">You can batch release the DeHs that are no longer in use. Charging for the released DeHs will be stopped.</p>
<p id="deh_01_0021__p0108346293">If you want to release multiple DeHs at a time, use the batch release method.</p>
</div>
<div class="section" id="deh_01_0021__section16826142319255"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0021__ol158262023102511"><li id="deh_01_0021__li882615239251">Log in to the management console.</li><li id="deh_01_0021__li7400245112144">Click <span><img id="deh_01_0021__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0021__li158261623142514">Under <strong id="deh_01_0021__b182170155710">Computing</strong>, click <strong id="deh_01_0021__b2230215479">Dedicated Host</strong>.<p id="deh_01_0021__p982611231258">The <strong id="deh_01_0021__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0021__section16826142319255"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0021__ol158262023102511"><li id="deh_01_0021__li882615239251">Log in to the management console.</li><li id="deh_01_0021__li7400245112144">Click <span><img id="deh_01_0021__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0021__li463810213416">Under <strong id="deh_01_0021__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0021__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0021__deh_01_0013_p110922219152">The <strong id="deh_01_0021__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0021__li14826923112517">In the list of DeHs, select one or more target DeHs.<p id="deh_01_0021__p174413523020"><a name="deh_01_0021__li14826923112517"></a><a name="li14826923112517"></a>You can concurrently select all DeHs on the current page by selecting the check box in the list header.</p>
</li><li id="deh_01_0021__li2590245153017">Click <strong id="deh_01_0021__b842352706184832">Release</strong> in the upper left corner of the list.<p id="deh_01_0021__p474964143015">The <strong id="deh_01_0021__b842352706184252">Release DeH</strong> dialog box is displayed.</p>
</li><li id="deh_01_0021__li4910542718">Click <strong id="deh_01_0021__b10630133012164">Yes</strong>.</li></ol>

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<div id="body1484839453949"></div>
<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="deh_01_0023.html">Querying ECSs on a DeH</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0023.html">Viewing the Details of ECSs on a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0024.html">Managing ECSs on a DeH</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0024.html">Managing an ECS on a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0025.html">Managing the ECSs on a DeH in Batches</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0028.html">Modifying Specifications of ECSs on DeHs</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_01_0028.html">Modifying the Specifications of an ECS on a DeH</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_01_0033.html">Migrating ECSs</a></strong><br>
</li>

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<a name="deh_01_0023"></a><a name="deh_01_0023"></a>
<h1 class="topictitle1">Querying ECSs on a DeH</h1>
<div id="body1483864743551"><div class="section" id="deh_01_0023__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0023__p11249561283">Query information about the ECSs running on each DeH on the management console.</p>
<h1 class="topictitle1">Viewing the Details of ECSs on a DeH</h1>
<div id="body1483864743551"><div class="section" id="deh_01_0023__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0023__p11249561283">You can view the information about the ECSs running on each DeH on the management console.</p>
</div>
<div class="section" id="deh_01_0023__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0023__ol1724145632818"><li id="deh_01_0023__li0241456122813">Log in to the management console.</li><li id="deh_01_0023__li45450331112226">Click <span><img id="deh_01_0023__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0023__li102415612815">Under <strong id="deh_01_0023__b15565133654813">Computing</strong>, click <strong id="deh_01_0023__b1444810229485">Dedicated Host</strong>.<p id="deh_01_0023__p192414564283">The <strong id="deh_01_0023__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0023__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0023__ol1724145632818"><li id="deh_01_0023__li0241456122813">Log in to the management console.</li><li id="deh_01_0023__li6276335811200">Click <span><img id="deh_01_0023__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0023__li158261623142514">Under <strong id="deh_01_0023__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0023__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0023__deh_01_0013_p110922219152">The <strong id="deh_01_0023__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0023__li13241956132818">Click the DeH to be queried.<p id="deh_01_0023__p8244567289"><a name="deh_01_0023__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0023__li19241356182817">On the <strong id="deh_01_0023__b84235270617350">ECSs on the DeH</strong> tab, view the following information about the ECSs on the DeH:<ul id="deh_01_0023__ul28508765101435"><li id="deh_01_0023__li53019336101435">Name</li><li id="deh_01_0023__li25575102101443">Status</li><li id="deh_01_0023__li7366704101446">Specifications</li><li id="deh_01_0023__li28044631101448">Image</li><li id="deh_01_0023__li20539501101457">Private IP address</li><li id="deh_01_0023__li1467880510151">Elastic IP Address (EIP)</li></ul>
</li></ol>
</div>
<div class="section" id="deh_01_0023__section17561391101520"><h4 class="sectiontitle">Follow-up Operations</h4><p id="deh_01_0023__p60580210101526"><a href="deh_01_0024.html">Managing ECSs on a DeH</a></p>
<div class="section" id="deh_01_0023__section17561391101520"><h4 class="sectiontitle">Follow-up Operations</h4><p id="deh_01_0023__p60580210101526"><a href="deh_01_0024.html">Managing an ECS on a DeH</a></p>
</div>
</div>
<div>

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<h1 class="topictitle1">Managing ECSs on a DeH</h1>
<div id="body1484532265553"><div class="section" id="deh_01_0024__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0024__p11249561283">You can start, stop, restart, or delete ECSs on a DeH on the management console.</p>
<h1 class="topictitle1">Managing an ECS on a DeH</h1>
<div id="body1484532265553"><div class="section" id="deh_01_0024__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0024__p11249561283">You can start, stop, restart, or delete an ECS on a DeH on the management console.</p>
</div>
<div class="section" id="deh_01_0024__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0024__ol1724145632818"><li id="deh_01_0024__li0241456122813">Log in to the management console.</li><li id="deh_01_0024__li305035211239">Click <span><img id="deh_01_0024__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0024__li102415612815">Under <strong id="deh_01_0024__b9749134544813">Computing</strong>, click <strong id="deh_01_0024__b7750745134818">Dedicated Host</strong>.<p id="deh_01_0024__p192414564283">The <strong id="deh_01_0024__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0024__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0024__ol1724145632818"><li id="deh_01_0024__li0241456122813">Log in to the management console.</li><li id="deh_01_0024__li6276335811200">Click <span><img id="deh_01_0024__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0024__li158261623142514">Under <strong id="deh_01_0024__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0024__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0024__deh_01_0013_p110922219152">The <strong id="deh_01_0024__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0024__li13241956132818">Click the name of the target DeH.<p id="deh_01_0024__p8244567289"><a name="deh_01_0024__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0024__li19241356182817">On the <strong id="deh_01_0024__b84235270618331">ECSs on the DeH</strong> tab, locate the target ECS and select the target option in the <strong id="deh_01_0024__b84235270618513">Operation</strong> column to manage the ECS. Alternatively, select the target ECSs and select an operation above the ECS list.<p id="deh_01_0024__p1077069410193">The options are as follows:</p>
<ul id="deh_01_0024__ul57580574101918"><li id="deh_01_0024__li1737271719503"><strong id="deh_01_0024__b84235270694052">Modify Specifications</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0024__li32555009101918"><strong id="deh_01_0024__b84235270618622">Start</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0024__li10627609101921"><strong id="deh_01_0024__b253109686">Stop</strong> (allowed only when ECSs are running)</li><li id="deh_01_0024__li7047769101923"><strong id="deh_01_0024__b484416454">Restart</strong> (allowed only when ECSs are running)</li><li id="deh_01_0024__li19675933184017"><strong id="deh_01_0024__b84235270618941">Delete</strong></li></ul>
</li><li id="deh_01_0024__li19241356182817">On the <strong id="deh_01_0024__b84235270618331">ECSs on the DeH</strong> tab, locate the target ECS and select the target option in the <strong id="deh_01_0024__b84235270618513">Operation</strong> column to manage the ECS. Alternatively, select the target ECS and select an operation above the ECS list.<p id="deh_01_0024__p1077069410193">The options are as follows:</p>
<ul id="deh_01_0024__ul57580574101918"><li id="deh_01_0024__li1737271719503"><strong id="deh_01_0024__b84235270694052">Modify Specifications</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0024__li32555009101918"><strong id="deh_01_0024__b84235270618622">Start</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0024__li10627609101921"><strong id="deh_01_0024__b2143976679">Stop</strong> (allowed only when ECSs are running)</li><li id="deh_01_0024__li7047769101923"><strong id="deh_01_0024__b2042794424">Restart</strong> (allowed only when ECSs are running)</li><li id="deh_01_0024__li19675933184017"><strong id="deh_01_0024__b84235270618941">Delete</strong></li></ul>
</li></ol>
</div>
<div class="section" id="deh_01_0024__section6175746102828"><h4 class="sectiontitle">Related Operations</h4><p id="deh_01_0024__p34140468102839">On the <strong id="deh_01_0024__b60908312875218">ECSs on the DeH</strong> tab page, you can also click Create to create ECSs.</p>
<div class="section" id="deh_01_0024__section6175746102828"><h4 class="sectiontitle">Related Operations</h4><p id="deh_01_0024__p34140468102839">On the <strong id="deh_01_0024__b60908312875218">ECSs on the DeH</strong> tab page, you can also click <strong id="deh_01_0024__b8265555131212">Create</strong> to create ECSs.</p>
<p id="deh_01_0024__p25612637111718">For details, see <a href="https://docs.otc.t-systems.com/en-us/usermanual/ecs/en-us_topic_0021831611.html" target="_blank" rel="noopener noreferrer">Creating an ECS</a>.</p>
<div class="note" id="deh_01_0024__note096981153219"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="deh_01_0024__deh_01_0014_ul1473635253016"><li id="deh_01_0024__deh_01_0014_li10736175210307">When selecting an ECS type, pay attention to mapping between the ECS type and the DeH type. If no matched DeH resources exist, ECSs cannot be created.</li></ul>
</div></div>

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<h1 class="topictitle1">Managing the ECSs on a DeH in Batches</h1>
<div id="body1484533300189"><div class="section" id="deh_01_0025__section3231056202810"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0025__p11249561283">You can start, stop, restart, or delete multiple ECSs on a DeH at a time on the management console.</p>
</div>
<div class="section" id="deh_01_0025__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0025__ol1724145632818"><li id="deh_01_0025__li0241456122813">Log in to the management console.</li><li id="deh_01_0025__li8005356112349">Click <span><img id="deh_01_0025__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0025__li102415612815">Under <strong id="deh_01_0025__b1584115715579">Computing</strong>, click <strong id="deh_01_0025__b1569519182171">Dedicated Host</strong>.<p id="deh_01_0025__p192414564283">The <strong id="deh_01_0025__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0025__section1241956132810"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0025__ol1724145632818"><li id="deh_01_0025__li0241456122813">Log in to the management console.</li><li id="deh_01_0025__li6276335811200">Click <span><img id="deh_01_0025__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0025__li158261623142514">Under <strong id="deh_01_0025__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0025__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0025__deh_01_0013_p110922219152">The <strong id="deh_01_0025__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0025__li13241956132818">Click the name of the target DeH.<p id="deh_01_0025__p8244567289"><a name="deh_01_0025__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0025__li19241356182817">On the <strong id="deh_01_0025__b842352706182353">ECSs on the DeH</strong> tab, select the target ECSs.<p id="deh_01_0025__p5955112102239">You can select multiple ECSs by selecting the check box before the ECS name.</p>
</li><li id="deh_01_0025__li19241356182817">On the <strong id="deh_01_0025__b842352706182353">ECSs on the DeH</strong> tab, select the target ECSs.<p id="deh_01_0025__p5955112102239">You can concurrently select all ECSs on the current page by selecting the check box in the list header.</p>
<div class="note" id="deh_01_0025__note27266684102613"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0025__p44073567102613">Except the deletion operation, ECSs to be operated in batches must be in the same state.</p>
</div></div>
</li><li id="deh_01_0025__li4781250710188">Click the button above the list to manage ECSs in batches.<p id="deh_01_0025__p1077069410193"><a name="deh_01_0025__li4781250710188"></a><a name="li4781250710188"></a>The options are as follows:</p>
<ul id="deh_01_0025__ul57580574101918"><li id="deh_01_0025__li20669557102548"><strong id="deh_01_0025__b84235270618622">Start</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0025__li51808293102548"><strong id="deh_01_0025__b1179810305">Stop</strong> (allowed only when ECSs are running.)</li><li id="deh_01_0025__li63621457102548"><strong id="deh_01_0025__b2142915035">Restart</strong> (allowed only when ECSs are running)</li><li id="deh_01_0025__li383413724312"><strong id="deh_01_0025__deh_01_0024_b84235270618941">Delete</strong></li></ul>
<ul id="deh_01_0025__ul57580574101918"><li id="deh_01_0025__li20669557102548"><strong id="deh_01_0025__b84235270618622">Start</strong> (allowed only when ECSs are stopped)</li><li id="deh_01_0025__li51808293102548"><strong id="deh_01_0025__b1276280959">Stop</strong> (allowed only when ECSs are running.)</li><li id="deh_01_0025__li63621457102548"><strong id="deh_01_0025__b1491452854">Restart</strong> (allowed only when ECSs are running)</li><li id="deh_01_0025__li383413724312"><strong id="deh_01_0025__deh_01_0024_b84235270618941">Delete</strong></li></ul>
</li></ol>
</div>
</div>

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</thead>
<tbody><tr id="deh_01_0026__row14708154411616"><td class="cellrowborder" valign="top" width="28.32%" headers="mcps1.3.2.1.3.1.1 "><p id="deh_01_0026__p1710164413613">BYOL</p>
</td>
<td class="cellrowborder" valign="top" width="71.67999999999999%" headers="mcps1.3.2.1.3.1.2 "><p id="deh_01_0026__p694783015115">BYOL indicates the Bring Your Own License mode. If you have an OS or a software license (a license whose certified items include number of physical sockets and physical cores), you can migrate your services to the cloud platform using the Bring Your Own License (BYOL) mode. Then, you can continue to use your existing licenses.</p>
<td class="cellrowborder" valign="top" width="71.67999999999999%" headers="mcps1.3.2.1.3.1.2 "><p id="deh_01_0026__p694783015115">BYOL indicates the Bring Your Own License mode. If you have an OS or a software license (a license whose certified items include number of physical sockets and physical cores), you can migrate your services to the cloud platform and continue to use your existing licenses.</p>
</td>
</tr>
<tr id="deh_01_0026__row57105441616"><td class="cellrowborder" valign="top" width="28.32%" headers="mcps1.3.2.1.3.1.1 "><p id="deh_01_0026__p147101144568">Region</p>
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</tr>
<tr id="deh_01_0026__row7564571218"><td class="cellrowborder" valign="top" width="28.32%" headers="mcps1.3.2.1.3.1.1 "><p id="deh_01_0026__p756135121212">Project</p>
</td>
<td class="cellrowborder" valign="top" width="71.67999999999999%" headers="mcps1.3.2.1.3.1.2 "><p id="deh_01_0026__p75713581215">A project groups and isolates IaaS OpenStack resources, such as compute, storage, and network resources. A project can be a department or a team.</p>
<td class="cellrowborder" valign="top" width="71.67999999999999%" headers="mcps1.3.2.1.3.1.2 "><p id="deh_01_0026__p75713581215">A project groups and isolates IaaS OpenStack resources, such as compute, storage, and networking resources. A project can be a department or a team.</p>
<p id="deh_01_0026__p4523182781912">Multiple projects can be created under one account.</p>
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<h1 class="topictitle1">Comparisons Between ECSs in Resource Pools and ECSs on DeHs</h1>
<h1 class="topictitle1">Differences Between ECSs in Resource Pools and ECSs on DeHs</h1>
<div id="body1502507702284"><p id="deh_01_0027__p60550704111549">ECSs in resource pools and ECSs on DeHs have almost the same functions except those listed in <a href="#deh_01_0027__table4650133512557">Table 1</a>.</p>
<div class="tablenoborder"><a name="deh_01_0027__table4650133512557"></a><a name="table4650133512557"></a><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0027__table4650133512557" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Comparisons between ECSs in resource pools and ECSs on DeHs</caption><thead align="left"><tr id="deh_01_0027__row46501535105511"><th align="left" class="cellrowborder" valign="top" width="21.04210421042104%" id="mcps1.3.2.2.4.1.1"><p id="deh_01_0027__p1765083520559">Item</p>
<div class="tablenoborder"><a name="deh_01_0027__table4650133512557"></a><a name="table4650133512557"></a><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0027__table4650133512557" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Differences between ECSs in resource pools and ECSs on DeHs</caption><thead align="left"><tr id="deh_01_0027__row46501535105511"><th align="left" class="cellrowborder" valign="top" width="21.04210421042104%" id="mcps1.3.2.2.4.1.1"><p id="deh_01_0027__p1765083520559">Item</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="35.3035303530353%" id="mcps1.3.2.2.4.1.2"><p id="deh_01_0027__p16501835145513">Resource Pool ECS</p>
<th align="left" class="cellrowborder" valign="top" width="35.3035303530353%" id="mcps1.3.2.2.4.1.2"><p id="deh_01_0027__p16501835145513">ECSs in Resources Pools</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="43.65436543654365%" id="mcps1.3.2.2.4.1.3"><p id="deh_01_0027__p1465083517559">DeH ECS</p>
<th align="left" class="cellrowborder" valign="top" width="43.65436543654365%" id="mcps1.3.2.2.4.1.3"><p id="deh_01_0027__p1465083517559">ECSs on DeHs</p>
</th>
</tr>
</thead>
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</div></div>
</td>
<td class="cellrowborder" valign="top" width="43.65436543654365%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0027__p15691428194210">Supported</p>
<div class="note" id="deh_01_0027__note198341832141120"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="deh_01_0027__p2018313710422">If a DeH becomes faulty, the system will select a server from the unprovisioned servers to replace the faulty DeH and automatically migrate the ECSs deployed on the faulty DeH to the new DeH, ensuring high service availability.</p>
<div class="note" id="deh_01_0027__note198341832141120"><span class="notetitle"> NOTE: </span><div class="notebody"><p id="deh_01_0027__p2018313710422">If a DeH becomes faulty, the system will select an unprovisioned server as the backup DeH and automatically migrate the ECSs from the faulty DeH to the new DeH, ensuring high service availability.</p>
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<h1 class="topictitle1">Modifying Specifications of ECSs on DeHs</h1>
<div id="body1521531913372"><div class="section" id="deh_01_0028__section794312566456"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0028__p8717658104514">When the specifications of ECSs on a DeH cannot meet service requirements, you can modify the ECS specifications including the vCPUs and memory.</p>
<h1 class="topictitle1">Modifying the Specifications of an ECS on a DeH</h1>
<div id="body1521531913372"><div class="section" id="deh_01_0028__section794312566456"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0028__p8717658104514">When the specifications of ECSs on a DeH cannot meet your service requirements, you can modify the ECS specifications including the vCPUs and memory.</p>
</div>
<div class="section" id="deh_01_0028__section11641463461"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0028__ol1724145632818"><li id="deh_01_0028__li0241456122813">Log in to the management console.</li><li id="deh_01_0028__li305035211239">Click <span><img id="deh_01_0028__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0028__li102415612815">Under <strong id="deh_01_0028__b13201112035816">Computing</strong>, click <strong id="deh_01_0028__b0369112991710">Dedicated Host</strong>.<p id="deh_01_0028__p192414564283">The <strong id="deh_01_0028__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0028__section11641463461"><h4 class="sectiontitle">Procedure</h4><ol id="deh_01_0028__ol1724145632818"><li id="deh_01_0028__li0241456122813">Log in to the management console.</li><li id="deh_01_0028__li6276335811200">Click <span><img id="deh_01_0028__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0028__li158261623142514">Under <strong id="deh_01_0028__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0028__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0028__deh_01_0013_p110922219152">The <strong id="deh_01_0028__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0028__li13241956132818">Click the name of the target DeH.<p id="deh_01_0028__p8244567289"><a name="deh_01_0028__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0028__li19241356182817">On the <strong id="deh_01_0028__b842352706182353">ECSs on the DeH</strong> tab, query the status of the target ECS.</li><li id="deh_01_0028__li9118133014114">Only the specifications of a stopped ECS can be modified. If the ECS is not stopped, click <strong id="deh_01_0028__b842352706113834">More</strong> and select <strong id="deh_01_0028__b842352706123127">Stop</strong> in the <strong id="deh_01_0028__b842352706123122">Operation</strong> column.</li><li id="deh_01_0028__li136347134133">After the ECS status changes to <strong id="deh_01_0028__b9998910172628">Stopped</strong>, click <strong id="deh_01_0028__b22881333172628">Modify Specifications</strong> in the <strong id="deh_01_0028__b4605410172628">Operation</strong> column.<p id="deh_01_0028__p77601434151419">The <strong id="deh_01_0028__b36411425123818">Modify ECS Specifications</strong> page is displayed. Modify the specifications by following the instructions described in <em id="deh_01_0028__i68975545914">Elastic Cloud Server User Guide</em>.</p>
</li><li id="deh_01_0028__li19241356182817">On the <strong id="deh_01_0028__b842352706182353">ECSs on the DeH</strong> tab, view the status of the target ECS.</li><li id="deh_01_0028__li9118133014114">Only the specifications of a stopped ECS can be modified. If the ECS is not stopped, click <strong id="deh_01_0028__b842352706113834">More</strong> and select <strong id="deh_01_0028__b842352706123127">Stop</strong> in the <strong id="deh_01_0028__b842352706123122">Operation</strong> column.</li><li id="deh_01_0028__li136347134133">After the ECS status changes to <strong id="deh_01_0028__b9998910172628">Stopped</strong>, click <strong id="deh_01_0028__b22881333172628">Modify Specifications</strong> in the <strong id="deh_01_0028__b4605410172628">Operation</strong> column.<p id="deh_01_0028__p77601434151419">The <strong id="deh_01_0028__b36411425123818">Modify ECS Specifications</strong> page is displayed. Modify the specifications by following the instructions described in <em id="deh_01_0028__i68975545914">Elastic Cloud Server User Guide</em>.</p>
</li></ol>
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</th>
<th align="left" class="cellrowborder" valign="top" width="12.121212121212121%" id="mcps1.3.2.2.2.6.1.2"><p id="deh_01_0031__p191221415163"><strong id="deh_01_0031__b8847636163021">Number of CPUs (Sockets)</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="14.141414141414144%" id="mcps1.3.2.2.2.6.1.3"><p id="deh_01_0031__p19912514161611"><strong id="deh_01_0031__b1720708827">Number of Physical Cores</strong></p>
<th align="left" class="cellrowborder" valign="top" width="14.141414141414144%" id="mcps1.3.2.2.2.6.1.3"><p id="deh_01_0031__p19912514161611"><strong id="deh_01_0031__b513133291">Number of Physical Cores</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="48.484848484848484%" id="mcps1.3.2.2.2.6.1.4"><p id="deh_01_0031__p119121614111614"><strong id="deh_01_0031__b883561068">Hardware Specifications</strong></p>
<th align="left" class="cellrowborder" valign="top" width="48.484848484848484%" id="mcps1.3.2.2.2.6.1.4"><p id="deh_01_0031__p119121614111614"><strong id="deh_01_0031__b314903612">Hardware Specifications</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="11.111111111111112%" id="mcps1.3.2.2.2.6.1.5"><p id="deh_01_0031__p1091216148168">vCPUs</p>
<th align="left" class="cellrowborder" valign="top" width="11.111111111111112%" id="mcps1.3.2.2.2.6.1.5"><p id="deh_01_0031__p1091216148168"><strong id="deh_01_0031__b150639634810511">Number of vCPUs</strong></p>
</th>
</tr>
</thead>
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</td>
<td class="cellrowborder" valign="top" width="14.141414141414144%" headers="mcps1.3.2.2.2.6.1.3 "><p id="deh_01_0031__p4912314121616">22</p>
</td>
<td class="cellrowborder" valign="top" width="48.484848484848484%" headers="mcps1.3.2.2.2.6.1.4 "><ul id="deh_01_0031__ul115224111816"><li id="deh_01_0031__li141682471816">CPU: Intel Cascade Lake 6266 (frequency: 3.00 GHz; Turbo frequency: 3.40 GHz)</li><li id="deh_01_0031__li125858262180">Memory: 296 GB (or 303,104 MB)</li></ul>
<td class="cellrowborder" valign="top" width="48.484848484848484%" headers="mcps1.3.2.2.2.6.1.4 "><ul id="deh_01_0031__ul115224111816"><li id="deh_01_0031__li141682471816">CPU: Intel Cascade Lake 6266 (frequency: 3.00 GHz; turbo frequency: 3.40 GHz)</li><li id="deh_01_0031__li125858262180">Memory: 296 GB (or 303,104 MB)</li></ul>
</td>
<td class="cellrowborder" valign="top" width="11.111111111111112%" headers="mcps1.3.2.2.2.6.1.5 "><p id="deh_01_0031__p94354112507">74</p>
</td>
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</tbody>
</table>
</div>
<div class="note" id="deh_01_0031__note7797104192917"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0031__p379813422911">Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads - CPU overheads) x CPU overcommitment ratio</p>
<ul id="deh_01_0031__ul452119381167"><li id="deh_01_0031__li1142219514282">c4 DeHs<p id="deh_01_0031__p19296259112812"><a name="deh_01_0031__li1142219514282"></a><a name="li1142219514282"></a>vCPUs = (2 x 22 x 2 - 14) x 1 = 74</p>
<div class="note" id="deh_01_0031__note7797104192917"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0031__p379813422911">Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads – CPU overheads) x CPU overcommitment ratio</p>
<ul id="deh_01_0031__ul452119381167"><li id="deh_01_0031__li1142219514282">c4 DeHs<p id="deh_01_0031__p19296259112812"><a name="deh_01_0031__li1142219514282"></a><a name="li1142219514282"></a>vCPUs = (2 x 22 x 2 – 14) x 1 = 74</p>
<p id="deh_01_0031__p19344191253620"></p>
</li></ul>
</div></div>
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</th>
<th align="left" class="cellrowborder" valign="top" width="29.49%" id="mcps1.3.3.2.2.4.1.2"><p id="deh_01_0031__p75612039183315">vCPUs</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0031__p55643394332">Memory (RAM in GB)</p>
<th align="left" class="cellrowborder" valign="top" width="39.739999999999995%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0031__p55643394332">Memory (RAM in GiB)</p>
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<h1 class="topictitle1">Product Advantages</h1>
<div id="body1536920764520"><ul id="deh_01_0032__ul10857501121"><li id="deh_01_0032__li7851650023">Cost-effectiveness: DeH allows you to bring your own license (BYOL), such as licenses for Microsoft Windows Server, Microsoft SQL Server, and Microsoft Office.</li><li id="deh_01_0032__li055325420219">Security: DeH isolates compute resources to prevent your workloads on DeHs from being affected by those of other tenants.</li><li id="deh_01_0032__li1514012128312">Legal compliance: Physically isolated DeHs help you to meet regulation compliance and surveillance requirements for your sensitive services.</li><li id="deh_01_0032__li59111573210">Scalability: You can apply for your DeHs flexibly. Your DeHs will be allocated within several minutes.</li><li id="deh_01_0032__li95687612318">Reliability: DeH provides 99.95% availability.</li><li id="deh_01_0032__li1262893473618">Automatic recovery: If a DeH is faulty, all ECSs on the faulty DeH are automatically migrated to another idle DeH in the resource pool and the idle DeH will be associated to the user.</li></ul>
<div id="body1536920764520"><ul id="deh_01_0032__ul10857501121"><li id="deh_01_0032__li7851650023">Cost-effectiveness: DeH allows you to bring your own license (BYOL), such as licenses for Microsoft Windows Server, Microsoft SQL Server, and Microsoft Office, to reduce licensing costs.</li><li id="deh_01_0032__li055325420219">Security: DeH isolates compute resources to prevent your workloads on DeHs from being affected by those of other tenants.</li><li id="deh_01_0032__li1514012128312">Legal compliance: Physically isolated DeHs help you meet regulation compliance and surveillance requirements for your sensitive services.</li><li id="deh_01_0032__li59111573210">Flexibility: A DeH can be allocated within several minutes, allowing you to buy one at any time you want.</li><li id="deh_01_0032__li95687612318">Reliability: DeH provides 99.95% availability.</li><li id="deh_01_0032__li1262893473618">Automatic recovery: If a DeH is faulty, all ECSs on the faulty DeH are automatically migrated to another idle DeH in the resource pool and the idle DeH will be associated to the user.</li></ul>
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<h1 class="topictitle1">Migrating ECSs</h1>
<div id="body1539336942903"><div class="section" id="deh_01_0033__section17761164816565"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0033__p3334710155717">ECSs can be migrated between DeHs or between a DeH and a public resource pool.</p>
<ul id="deh_01_0033__ul1222171486"><li id="deh_01_0033__li122116114820">An ECS created on a DeH can be migrated to another DeH.</li><li id="deh_01_0033__li6221111685">An ECS created on a DeH can be migrated to a public resource pool.</li><li id="deh_01_0033__li152212113819">An ECS deployed in a public resource pool can be migrated to a DeH.<div class="note" id="deh_01_0033__note75801234500"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0033__p1158110325020">Operations in this scenario need to be performed on the ECS console. For details, see Migrating an ECS in the <em id="deh_01_0033__i842352697102833">Elastic Cloud Server User Guide</em>.</p>
<div id="body1539336942903"><div class="section" id="deh_01_0033__section17761164816565"><h4 class="sectiontitle">Scenarios</h4><p id="deh_01_0033__p3334710155717">ECSs can be migrated between DeHs or between a DeH and a public resource pool. You can:</p>
<ul id="deh_01_0033__ul1222171486"><li id="deh_01_0033__li122116114820">Migrate an ECS on a DeH to another DeH.</li><li id="deh_01_0033__li6221111685">Migrate an ECS on a DeH to a public resource pool.</li><li id="deh_01_0033__li152212113819">Migrate an ECS in a public resource pool to a DeH.<div class="note" id="deh_01_0033__note75801234500"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0033__p1158110325020">Operations in this scenario need to be performed on the ECS console. For details, see Migrating an ECS in the <em id="deh_01_0033__i842352697102833">Elastic Cloud Server User Guide</em>.</p>
</div></div>
</li></ul>
</div>
<div class="section" id="deh_01_0033__section1213835718599"><h4 class="sectiontitle">Notes</h4><p id="deh_01_0033__p922291823819">Only a stopped ECS can be migrated.</p>
</div>
<div class="section" id="deh_01_0033__section12638144614015"><h4 class="sectiontitle"><strong id="deh_01_0033__b20370183315312">Procedure</strong></h4><ol id="deh_01_0033__ol165787319117"><li id="deh_01_0033__li3490190117228">Log in to the management console.</li><li id="deh_01_0033__li45450331112226">Click <span><img id="deh_01_0033__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0033__li1859019014179">Under <strong id="deh_01_0033__b1671442006">Computing</strong>, click <strong id="deh_01_0033__b157464020171">Dedicated Host</strong>.<p id="deh_01_0033__p8431459417">The <strong id="deh_01_0033__b16847161757">Dedicated Host</strong> page is displayed.</p>
<div class="section" id="deh_01_0033__section12638144614015"><h4 class="sectiontitle"><strong id="deh_01_0033__b20370183315312">Procedure</strong></h4><ol id="deh_01_0033__ol165787319117"><li id="deh_01_0033__li3490190117228">Log in to the management console.</li><li id="deh_01_0033__li6276335811200">Click <span><img id="deh_01_0033__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0033__li158261623142514">Under <strong id="deh_01_0033__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0033__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0033__deh_01_0013_p110922219152">The <strong id="deh_01_0033__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0033__li13241956132818">Click the name of the target DeH.<p id="deh_01_0033__p8244567289"><a name="deh_01_0033__li13241956132818"></a><a name="li13241956132818"></a>The DeH details page is displayed.</p>
</li><li id="deh_01_0033__li16624242519">On the <strong id="deh_01_0033__b842352706182353">ECSs on the DeH</strong> tab, query the status of the ECS to be migrated.</li><li id="deh_01_0033__li19514203019220">Only a stopped ECS can be migrated. If the ECS is not stopped, click <strong id="deh_01_0033__b6832125617219">More</strong> and select <strong id="deh_01_0033__b883495611214">Stop</strong> in the <strong id="deh_01_0033__b7835195611218">Operation</strong> column.</li><li id="deh_01_0033__li9529818144715">After the ECS status changes to <strong id="deh_01_0033__b9998910172628">Stopped</strong>, click <strong id="deh_01_0033__b842352706103135">More</strong> and select <strong id="deh_01_0033__b22881333172628">Migrate ECS</strong> in the <strong id="deh_01_0033__b4605410172628">Operation</strong> column.</li><li id="deh_01_0033__li106356115312">On the <strong id="deh_01_0033__b842352706103554">Migrate ECS</strong> page, select the destination where you would like to migrate the ECS.<ul id="deh_01_0033__ul19119183455216"><li id="deh_01_0033__li1911963425217">If you want to migrate the ECS to another DeH, set <strong id="deh_01_0033__b6161854132810">Migrated </strong>to <strong id="deh_01_0033__b81621542284">To another DeH</strong>.</li><li id="deh_01_0033__li19119234165218">If you want to migrate the ECS from a DeH to a public resource pool, set <strong id="deh_01_0033__b1460201115294">Migrated</strong> to <strong id="deh_01_0033__b196181122911">Out of DeH</strong>.</li></ul>
</li><li id="deh_01_0033__li10732174185214">Click <strong id="deh_01_0033__b17701820105018">OK</strong>.<div class="note" id="deh_01_0033__note1445963614318"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0033__p7459143611312">The ECS status changes from <strong id="deh_01_0033__b81941752205118">Resizing</strong> to <strong id="deh_01_0033__b636615745110">Stopped</strong> during ECS migration.</p>
</li><li id="deh_01_0033__li16624242519">On the <strong id="deh_01_0033__b842352706182353">ECSs on the DeH</strong> tab, view the status of the ECS to be migrated.</li><li id="deh_01_0033__li19514203019220">Only a stopped ECS can be migrated. If the ECS is not stopped, click <strong id="deh_01_0033__b6832125617219">More</strong> and select <strong id="deh_01_0033__b883495611214">Stop</strong> in the <strong id="deh_01_0033__b7835195611218">Operation</strong> column.</li><li id="deh_01_0033__li9529818144715">After the ECS status changes to <strong id="deh_01_0033__b9998910172628">Stopped</strong>, click <strong id="deh_01_0033__b842352706103135">More</strong> and select <strong id="deh_01_0033__b22881333172628">Migrate ECS</strong> in the <strong id="deh_01_0033__b4605410172628">Operation</strong> column.</li><li id="deh_01_0033__li106356115312">On the <strong id="deh_01_0033__b842352706103554">Migrate ECS</strong> page, select the destination where you would like to migrate the ECS.<ul id="deh_01_0033__ul19119183455216"><li id="deh_01_0033__li1911963425217">If you want to migrate the ECS to another DeH, set <strong id="deh_01_0033__b6161854132810">Migrated </strong>to <strong id="deh_01_0033__b81621542284">To another DeH</strong>.</li><li id="deh_01_0033__li19119234165218">If you want to migrate the ECS from a DeH to a public resource pool, set <strong id="deh_01_0033__b1460201115294">Migrated</strong> to <strong id="deh_01_0033__b196181122911">Out of DeH</strong>.</li></ul>
</li><li id="deh_01_0033__li10732174185214">Click <strong id="deh_01_0033__b17701820105018">OK</strong>.<div class="note" id="deh_01_0033__note1445963614318"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0033__p7459143611312">The ECS status changes from <strong id="deh_01_0033__b81941752205118">Resizing</strong> to <strong id="deh_01_0033__b636615745110">Stopped</strong> during migration.</p>
</div></div>
</li></ol>
</div>

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<a name="deh_01_0034"></a><a name="deh_01_0034"></a>
<h1 class="topictitle1">Adjusting DeH Resource Quotas</h1>
<div id="body1549854860836"><div class="section" id="deh_01_0034__section102291042164212"><h4 class="sectiontitle">What Is Quota?</h4><p id="deh_01_0034__en-us_topic_0040259342_p1415804616467">Quotas can limit the number or amount of resources available to users, such as the maximum number of ECSs or EVS disks that can be created.</p>
<div id="body1549854860836"><div class="section" id="deh_01_0034__section102291042164212"><h4 class="sectiontitle">What Is Quota?</h4><p id="deh_01_0034__en-us_topic_0040259342_p1415804616467">Quotas can limit the number or amount of resources available to users, such as the maximum number of <span id="deh_01_0034__en-us_topic_0040259342_text5492174012487">ECS</span> or EVS disks that can be created.</p>
<p id="deh_01_0034__en-us_topic_0040259342_p547171214515">If the existing resource quota cannot meet your service requirements, you can apply for a higher quota.</p>
</div>
<div class="section" id="deh_01_0034__section07760615438"><a name="deh_01_0034__section07760615438"></a><a name="section07760615438"></a><h4 class="sectiontitle">How Do I View My Quotas?</h4><ol id="deh_01_0034__en-us_topic_0040259342_ol1222775692215"><li id="deh_01_0034__en-us_topic_0040259342_li5648642910048">Log in to the management console.</li><li id="deh_01_0034__en-us_topic_0040259342_li464234814566">Click <span><img id="deh_01_0034__en-us_topic_0040259342_en-us_topic_0014250631_en-us_topic_0014250631_image1733511156361" src="en-us_image_0275513364.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0034__en-us_topic_0040259342_li3861581410048">In the upper right corner of the page, click <span><img id="deh_01_0034__en-us_topic_0040259342_image99377514309" src="en-us_image_0152727234.png"></span>.<p id="deh_01_0034__en-us_topic_0040259342_p1748884433119">The <strong id="deh_01_0034__en-us_topic_0040259342_b695801964614">Service Quota</strong> page is displayed.</p>
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</div>
<div class="section" id="deh_01_0034__section12263162917105"><h4 class="sectiontitle">How Do I Apply for a Higher Quota?</h4><p id="deh_01_0034__en-us_topic_0040259342_p133802054172617">The system does not support online quota adjustment. If you need to adjust a quota, call the hotline or send an email to the customer service mailbox. Customer service personnel will timely process your request for quota adjustment and inform you of the real-time progress by making a call or sending an email.</p>
<p id="deh_01_0034__en-us_topic_0040259342_p13745144852611">Before dialing the hotline number or sending an email, make sure that the following information has been obtained:</p>
<ul id="deh_01_0034__en-us_topic_0040259342_ul37351029162712"><li id="deh_01_0034__en-us_topic_0040259342_li12735132932714">Domain name, project name, and project ID, which can be obtained by performing the following operations:<p id="deh_01_0034__en-us_topic_0040259342_p1973542918275"><a name="deh_01_0034__en-us_topic_0040259342_li12735132932714"></a><a name="en-us_topic_0040259342_li12735132932714"></a>Log in to the management console using the cloud account, click the username in the upper right corner, select <strong id="deh_01_0034__en-us_topic_0040259342_b171181053141511">My Credentials</strong> from the drop-down list, and obtain the domain name, project name, and project ID on the <strong id="deh_01_0034__en-us_topic_0040259342_b1956165671712">My Credentials</strong> page.</p>
<ul id="deh_01_0034__en-us_topic_0040259342_ul37351029162712"><li id="deh_01_0034__en-us_topic_0040259342_li12735132932714">Domain name, project name, and project ID, which can be obtained by performing the following operations:<p id="deh_01_0034__en-us_topic_0040259342_p1973542918275"><a name="deh_01_0034__en-us_topic_0040259342_li12735132932714"></a><a name="en-us_topic_0040259342_li12735132932714"></a>Log in to the management console using the cloud account, click the username in the upper right corner, select <strong id="deh_01_0034__en-us_topic_0040259342_b12450142685818">My Credentials</strong> from the drop-down list, and obtain the domain name, project name, and project ID on the <strong id="deh_01_0034__en-us_topic_0040259342_b9450162615810">My Credentials</strong> page.</p>
</li><li id="deh_01_0034__en-us_topic_0040259342_li13735182917270">Quota information, which includes:<ul id="deh_01_0034__en-us_topic_0040259342_ul6735102912273"><li id="deh_01_0034__en-us_topic_0040259342_li1073516296277">Service name</li><li id="deh_01_0034__en-us_topic_0040259342_li6735152972712">Quota type</li><li id="deh_01_0034__en-us_topic_0040259342_li773592992718">Required quota</li></ul>
</li></ul>
<p id="deh_01_0034__en-us_topic_0040259342_p126761744182712"><a href="https://open-telekom-cloud.com/en/contact" target="_blank" rel="noopener noreferrer">Learn how to obtain the service hotline and email address.</a></p>

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<h1 class="topictitle1">Tag Management</h1>
<div id="body1549095840582"><p id="deh_01_0038__p773716268254">Tags are identifiers of DeHs and can help you quickly identify your DeHs.</p>
<p id="deh_01_0038__p47140198252">You can add a tag to a DeH during the DeH creation. Alternatively, you can add a tag to a DeH on the <strong id="deh_01_0038__b1220142913257">Tags</strong> tab of the DeH details page. A maximum of 10 tags can be added to a DeH.</p>
<p id="deh_01_0038__p47140198252">You can add a tag to a DeH when creating a DeH. Alternatively, you can add a tag to a DeH on the <strong id="deh_01_0038__b1220142913257">Tags</strong> tab of the DeH details page. A maximum of 10 tags can be added to a DeH.</p>
<p id="deh_01_0038__p1473812618253">A tag consists of a tag key and a tag value. <a href="#deh_01_0038__table204442131366">Table 1</a> lists the naming requirements for keys and values.</p>
<div class="tablenoborder"><a name="deh_01_0038__table204442131366"></a><a name="table204442131366"></a><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0038__table204442131366" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Tag naming requirements</caption><thead align="left"><tr id="deh_01_0038__row44447138369"><th align="left" class="cellrowborder" valign="top" width="19.101910191019105%" id="mcps1.3.4.2.4.1.1"><p id="deh_01_0038__p470292918368"><strong id="deh_01_0038__b842352706184931">Parameter</strong></p>
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</table>
</div>
<div class="section" id="deh_01_0038__section2682195644817"><h4 class="sectiontitle">Searching for DeHs</h4><p id="deh_01_0038__p192421158174816">On the <strong id="deh_01_0038__b792112568258">Dedicated Host</strong> page, you can search for the desired DeHs by tag key and tag value.</p>
<ol id="deh_01_0038__ol0764152615250"><li id="deh_01_0038__li1764102610259">Log in to the management console.</li><li id="deh_01_0038__li11765126152513">Under <strong id="deh_01_0038__b713101810">Computing</strong>, click <strong id="deh_01_0038__b108061956161716">Dedicated Host</strong>.</li><li id="deh_01_0038__li67651826132510">In the upper right corner of the DeH list, click <strong id="deh_01_0038__b437864412391">Search by Tag</strong> to show the search page.<div class="fignone" id="deh_01_0038__fig1051216257312"><span class="figcap"><b>Figure 1 </b>Searching for DeHs by tag</span><br><span><img id="deh_01_0038__image0512325123117" src="en-us_image_0181721054.png"></span></div>
</li><li id="deh_01_0038__li177661260252">Enter the tag key and tag value of the DeH. Click <strong id="deh_01_0038__b46261211151117">Search</strong>.<p id="deh_01_0038__p9766826132515">The system automatically searches for your desired DeHs.</p>
</li><li id="deh_01_0038__li2766192618252">Click <span><img id="deh_01_0038__image1387714118418" src="en-us_image_0238393803.png"></span> to add a tag.<p id="deh_01_0038__p276642612510">You can add multiple tags to DeHs. The system will display DeHs that match all tags.</p>
<ol id="deh_01_0038__ol0764152615250"><li id="deh_01_0038__li1764102610259">Log in to the management console.</li><li id="deh_01_0038__li158261623142514">Under <strong id="deh_01_0038__deh_01_0013_b74015469552">Computing</strong>, click <strong id="deh_01_0038__deh_01_0013_b18542123185519">Dedicated Host</strong>.<p id="deh_01_0038__deh_01_0013_p110922219152">The <strong id="deh_01_0038__deh_01_0013_b16847161757">Dedicated Host</strong> page is displayed.</p>
</li><li id="deh_01_0038__li67651826132510">In the upper right corner of the DeH list, click <strong id="deh_01_0038__b437864412391">Search by Tag</strong> to show the search page.<div class="fignone" id="deh_01_0038__fig1051216257312"><span class="figcap"><b>Figure 1 </b>Searching for DeHs by tag</span><br><span><img id="deh_01_0038__image0512325123117" src="en-us_image_0181721054.png"></span></div>
</li><li id="deh_01_0038__li177661260252">Enter the tag key and tag value of the target DeH. Click <strong id="deh_01_0038__b46261211151117">Search</strong>.<p id="deh_01_0038__p9766826132515">The system automatically searches for your desired DeHs.</p>
</li><li id="deh_01_0038__li2766192618252">Click <span><img id="deh_01_0038__image1387714118418" src="en-us_image_0238393803.png"></span> to add a tag.<p id="deh_01_0038__p276642612510">You can add multiple tags to search for DeHs. The system will display DeHs that match all tags.</p>
</li><li id="deh_01_0038__li776652692511">Click <strong id="deh_01_0038__b13991105063315">Search</strong>.<p id="deh_01_0038__p27661726102514">The system searches for DeHs based on tag keys or tag values.</p>
</li></ol>
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<a name="deh_01_0039"></a><a name="deh_01_0039"></a>
<h1 class="topictitle1">Key Operations Recorded by CTS</h1>
<div id="body1525740868774"><p id="deh_01_0039__p2806195965318">Cloud Trace Service (CTS) is a log audit intended for cloud security. It allows you to collect, store, and query cloud resource operation records and use these records for security analysis, compliance auditing, resource tracking, and fault locating.</p>
</div>
<div id="body1525740868774"></div>
<div>
<ul class="ullinks">
<li class="ulchildlink"><strong><a href="deh_01_0040.html">Key DeH Operations Recorded by CTS</a></strong><br>

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<a name="deh_01_0040"></a><a name="deh_01_0040"></a>
<h1 class="topictitle1">Key DeH Operations Recorded by CTS</h1>
<div id="body1525740868774"><p id="deh_01_0040__p1361715214228"><a href="#deh_01_0040__table188813184512">Table 1</a> describes the DeH operations that can be recorded by CTS.</p>
<div id="body1525740868774"><p id="deh_01_0040__p1319394065817">Cloud Trace Service (CTS) is a log audit service intended for security. It allows you to collect, store, and query cloud resource operation records and use these records for security analysis, compliance auditing, resource tracking, and fault locating.</p>
<p id="deh_01_0040__p1361715214228"><a href="#deh_01_0040__table188813184512">Table 1</a> describes the DeH operations that can be recorded by CTS.</p>
<div class="tablenoborder"><a name="deh_01_0040__table188813184512"></a><a name="table188813184512"></a><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0040__table188813184512" frame="border" border="1" rules="all"><caption><b>Table 1 </b>DeH operations that can be recorded by CTS</caption><thead align="left"><tr id="deh_01_0040__row3423961584512"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.4.1.1"><p id="deh_01_0040__p2194545484512"><strong id="deh_01_0040__b8967148161815">Operation</strong></p>
<div class="tablenoborder"><a name="deh_01_0040__table188813184512"></a><a name="table188813184512"></a><table cellpadding="4" cellspacing="0" summary="" id="deh_01_0040__table188813184512" frame="border" border="1" rules="all"><caption><b>Table 1 </b>DeH operations that can be recorded by CTS</caption><thead align="left"><tr id="deh_01_0040__row3423961584512"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.4.1.1"><p id="deh_01_0040__p2194545484512"><strong id="deh_01_0040__b8967148161815">Operation</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.4.1.2"><p id="deh_01_0040__p3275134584512"><strong id="deh_01_0040__b1999916814184">Resource Type</strong></p>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.4.1.2"><p id="deh_01_0040__p3275134584512"><strong id="deh_01_0040__b1999916814184">Resource Type</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.4.1.3"><p id="deh_01_0040__p3561329784512"><strong id="deh_01_0040__b4039191816">Trace Name</strong></p>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.4.1.3"><p id="deh_01_0040__p3561329784512"><strong id="deh_01_0040__b4039191816">Trace Name</strong></p>
</th>
</tr>
</thead>
<tbody><tr id="deh_01_0040__row6610478984512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.1 "><p id="deh_01_0040__p64815508530">Creating a DeH</p>
<tbody><tr id="deh_01_0040__row6610478984512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.1 "><p id="deh_01_0040__p64815508530">Creating a DeH</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0040__p552435568530">dedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.2 "><p id="deh_01_0040__p552435568530">dedicatedHosts</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0040__p455430588530">createDedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.3 "><p id="deh_01_0040__p455430588530">createDedicatedHosts</p>
</td>
</tr>
<tr id="deh_01_0040__row5398817984512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.1 "><p id="deh_01_0040__p491111858530">Updating a DeH</p>
<tr id="deh_01_0040__row5398817984512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.1 "><p id="deh_01_0040__p491111858530">Updating a DeH</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0040__p185830118530">dedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.2 "><p id="deh_01_0040__p185830118530">dedicatedHosts</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0040__p288289388530">updateDedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.3 "><p id="deh_01_0040__p288289388530">updateDedicatedHosts</p>
</td>
</tr>
<tr id="deh_01_0040__row2219204884512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.1 "><p id="deh_01_0040__p112219868530">Deleting a DeH</p>
<tr id="deh_01_0040__row2219204884512"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.1 "><p id="deh_01_0040__p112219868530">Deleting a DeH</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.2 "><p id="deh_01_0040__p365656758530">dedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.2 "><p id="deh_01_0040__p365656758530">dedicatedHosts</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.4.1.3 "><p id="deh_01_0040__p90297338530">releaseDedicatedHosts</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.4.1.3 "><p id="deh_01_0040__p90297338530">releaseDedicatedHosts</p>
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<h1 class="topictitle1">Viewing CTS Traces</h1>
<div id="body1525740868774"><ol id="deh_01_0041__ol3001478295238"><li id="deh_01_0041__li3954991595238">Log in to the management console.</li><li id="deh_01_0041__li679716405010">Click <span><img id="deh_01_0041__deh_01_0012_image37839102485" src="en-us_image_0210485079.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0041__li3694304795238">Click <strong id="deh_01_0041__b145815019482">Service List</strong> and select <strong id="deh_01_0041__b945816044811">Cloud Trace Service</strong> under <strong id="deh_01_0041__b896731715218">Management &amp; Deployment</strong>.</li><li id="deh_01_0041__li4560416895238">Choose <strong id="deh_01_0041__en-us_topic_0030598499_b42162954165740">Trace List</strong> in the navigation pane on the left.</li><li id="deh_01_0041__li877858395238">Use filters to query traces. The following four filters are available:<ul class="subitemlist" id="deh_01_0041__ul13105101342515"><li id="deh_01_0041__li410561313257"><strong id="deh_01_0041__b1261175110296">Trace Type</strong>, <strong id="deh_01_0041__b16274151172913">Trace Source</strong>, <strong id="deh_01_0041__b13275451112918">Resource Type</strong>, and <strong id="deh_01_0041__b42751451102911">Search By</strong><p id="deh_01_0041__p191056131255">Select a filter from the drop-down list.</p>
<div id="body1525740868774"><ol id="deh_01_0041__ol3001478295238"><li id="deh_01_0041__li3954991595238">Log in to the management console.</li><li id="deh_01_0041__li6276335811200">Click <span><img id="deh_01_0041__deh_01_0017_image37839102485" src="en-us_image_0000001850888056.png"></span> in the upper left corner and select the desired region and project.</li><li id="deh_01_0041__li3694304795238">Click <strong id="deh_01_0041__b145815019482">Service List</strong> and select <strong id="deh_01_0041__b945816044811">Cloud Trace Service</strong> under <strong id="deh_01_0041__b896731715218">Management &amp; Deployment</strong>.</li><li id="deh_01_0041__li4560416895238">Choose <strong id="deh_01_0041__en-us_topic_0030598499_b42162954165740">Trace List</strong> in the navigation pane on the left.</li><li id="deh_01_0041__li877858395238">Use filters to query traces. The following four filters are available:<ul class="subitemlist" id="deh_01_0041__ul13105101342515"><li id="deh_01_0041__li410561313257"><strong id="deh_01_0041__b1261175110296">Trace Type</strong>, <strong id="deh_01_0041__b16274151172913">Trace Source</strong>, <strong id="deh_01_0041__b13275451112918">Resource Type</strong>, and <strong id="deh_01_0041__b42751451102911">Search By</strong><p id="deh_01_0041__p191056131255">Select a filter from the drop-down list.</p>
<p id="deh_01_0041__p1110561318258">When you select <strong id="deh_01_0041__b85271457202919">Resource ID</strong> for <strong id="deh_01_0041__b16539957102913">Search By</strong>, you also need to select or enter a resource ID.</p>
</li><li id="deh_01_0041__li14105141392513"><strong id="deh_01_0041__b106931123018">Operator</strong>: Select a specific operator (at user level rather than tenant level).</li><li id="deh_01_0041__li110591317255"><strong id="deh_01_0041__b118882273010">Trace Status</strong>: Available options include <strong id="deh_01_0041__b788942153015">All trace statuses</strong>, <strong id="deh_01_0041__b108891215306">normal</strong>, <strong id="deh_01_0041__b389017216303">warning</strong>, and <strong id="deh_01_0041__b12890523303">incident</strong>. You can only select one of them.</li><li id="deh_01_0041__li10105141313254">Time range: In the upper right corner of the page, you can query traces in the last one hour, last one day, last one week, or within a customized period.</li></ul>
</li><li id="deh_01_0041__li944262995238">Click <span><img id="deh_01_0041__image107811631590" src="en-us_image_0210486176.jpg"></span> on the left of the record to be queried to extend its details.<div class="fignone" id="deh_01_0041__fig2124535133313"><span class="figcap"><b>Figure 1 </b>Trace details</span><br><span><img id="deh_01_0041__image45671949185215" src="en-us_image_0162743969.png"></span></div>

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</tbody>
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</div>
<div class="note" id="deh_01_0049__note885412351339"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0049__p1162214761310">c3 DeHs: Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads - CPU overheads) x CPU overcommitment ratio</p>
<p id="deh_01_0049__p985414351337">vCPUs = (2 x 18 x 2 - 12) x 1 = 60</p>
<div class="note" id="deh_01_0049__note885412351339"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="deh_01_0049__p1162214761310">c3 DeHs: Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads – CPU overheads) x CPU overcommitment ratio</p>
<p id="deh_01_0049__p985414351337">vCPUs = (2 x 18 x 2 – 12) x 1 = 60</p>
</div></div>
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<div class="section" id="deh_01_0049__section1535463531311"><h4 class="sectiontitle">ECSs Allowed on c3 DeHs</h4>
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</th>
<th align="left" class="cellrowborder" valign="top" width="29.110000000000003%" id="mcps1.3.3.2.2.4.1.2"><p id="deh_01_0049__p17989161934011"><strong id="deh_01_0049__b84235270610514">vCPUs</strong></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="40.510000000000005%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0049__p179936198400"><strong id="deh_01_0049__b842352706123543">Memory (RAM in GB)</strong></p>
<th align="left" class="cellrowborder" valign="top" width="40.510000000000005%" id="mcps1.3.3.2.2.4.1.3"><p id="deh_01_0049__p179936198400">Memory (RAM in GiB)</p>
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<h1 class="topictitle1">Creating a User and Granting Permissions</h1>
<div id="body1593756967273"><p id="deh_01_0051__p10645171451718">This section describes how to use Identity and Access Management (IAM) to implement fine-grained permissions control for your DeH resources. With IAM, you can:</p>
<ul id="deh_01_0051__ul136451614141713"><li id="deh_01_0051__li2645314151712">Create IAM users for employees based on your enterprise's organizational structure. Each IAM user will have their own security credentials for accessing DeH resources.</li><li id="deh_01_0051__li46461214111713">Grant only the permissions required for users to perform a specific task.</li><li id="deh_01_0051__li11646171431715">Use IAM to entrust a cloud account or cloud service to perform efficient O&amp;M on your DeH resources.</li></ul>
<p id="deh_01_0051__p16646111481713">If your cloud account does not require individual IAM users, skip over this section.</p>
<ul id="deh_01_0051__ul136451614141713"><li id="deh_01_0051__li2645314151712">Create IAM users for employees based on your enterprise's organizational structure. Each IAM user will have their own security credentials for accessing DeH resources.</li><li id="deh_01_0051__li46461214111713">Grant only the permissions required for users to perform a specific task.</li><li id="deh_01_0051__li11646171431715">Use IAM to entrust an account or cloud service to perform efficient O&amp;M on your DeH resources.</li></ul>
<p id="deh_01_0051__p16646111481713">If your account does not require individual IAM users, skip over this section.</p>
<p id="deh_01_0051__p164661411173">This section describes the procedure for granting permissions (see <a href="#deh_01_0051__fig1515164216142">Figure 1</a>).</p>
<div class="section" id="deh_01_0051__section6126111243014"><h4 class="sectiontitle">Prerequisites</h4><p id="deh_01_0051__p103787963415">Learn about the permissions (see <a href="deh_01_0009.html">Permissions</a>) supported by DeH and choose policies or roles according to your requirements. For the permissions of other services, see <a href="https://docs.otc.t-systems.com/additional/permissions.html" target="_blank" rel="noopener noreferrer">Permissions</a>.</p>
<div class="section" id="deh_01_0051__section6126111243014"><h4 class="sectiontitle">Prerequisites</h4><p id="deh_01_0051__p103787963415">Learn about the permissions (see <a href="deh_01_0009.html">Permissions</a>) supported by DeH and choose policies or roles according to your requirements. For the permissions of other services, see <a href="https://docs.otc.t-systems.com/identity-access-management/permissions/permissions.html" target="_blank" rel="noopener noreferrer">Permissions</a>.</p>
</div>
<div class="section" id="deh_01_0051__section203711514125317"><h4 class="sectiontitle">Authorization Process</h4><div class="fignone" id="deh_01_0051__fig1515164216142"><a name="deh_01_0051__fig1515164216142"></a><a name="fig1515164216142"></a><span class="figcap"><b>Figure 1 </b>Process for granting DeH permissions</span><br><span><img id="deh_01_0051__image3885631155319" src="en-us_image_0259246060.jpg"></span></div>
<ol id="deh_01_0051__ol102751734125416"><li id="deh_01_0051__li527593485415"><a name="deh_01_0051__li527593485415"></a><a name="li527593485415"></a><a href="https://docs.otc.t-systems.com/identity-access-management/umn/getting_started/creating_a_user_group_and_assigning_permissions.html" target="_blank" rel="noopener noreferrer">Creating a User Group and Assigning Permissions</a><p id="deh_01_0051__p532014413567">Create a user group on the IAM console, and assign the DeH ReadOnlyAccess permission to the group.</p>
<ol id="deh_01_0051__ol102751734125416"><li id="deh_01_0051__li527593485415"><a name="deh_01_0051__li527593485415"></a><a name="li527593485415"></a><a href="https://docs.otc.t-systems.com/identity-access-management/umn/getting_started/creating_a_user_group_and_assigning_permissions.html" target="_blank" rel="noopener noreferrer">Creating a User Group and Assigning Permissions</a><p id="deh_01_0051__p532014413567">Create a user group on the IAM console and assign the DeHReadOnlyAccess permission to the group.</p>
</li><li id="deh_01_0051__li122751534175417"><a href="https://docs.otc.t-systems.com/identity-access-management/umn/getting_started/creating_a_user_and_adding_the_user_to_a_user_group.html" target="_blank" rel="noopener noreferrer">Creating a User and Adding the User to a User Group</a><p id="deh_01_0051__p12757347540">Create a user on the IAM console and add the user to the group created in <a href="#deh_01_0051__li527593485415">1</a>.</p>
</li><li id="deh_01_0051__li227543410541">Log in and verify permissions.<p id="deh_01_0051__p14448838131712"><a name="deh_01_0051__li227543410541"></a><a name="li227543410541"></a>Log in to the management console using the created user, and verify that the user only has read permissions for DeH.</p>
<ul id="deh_01_0051__ul0221541101419"><li id="deh_01_0051__li1522741121412">Click <strong id="deh_01_0051__b11339144173219">Service List</strong> and choose <strong id="deh_01_0051__b193656912820">Computing</strong> &gt; <strong id="deh_01_0051__b16373201272815">Dedicated Host</strong>. On the displayed page, click <strong id="deh_01_0051__b19177181717284">Buy DeH</strong> in the upper right corner. If you cannot buy a DeH (after the DeH ReadOnlyAccess permission is assigned), the DeH ReadOnlyAccess permission has already taken effect.</li><li id="deh_01_0051__li12221641131415">Choose any other service in the <strong id="deh_01_0051__b147711010143217">Service List</strong>. If a message appears indicating that you have insufficient permissions to access the service, the DeH ReadOnlyAccess policy has already taken effect.</li></ul>
<ul id="deh_01_0051__ul0221541101419"><li id="deh_01_0051__li1522741121412">Click <strong id="deh_01_0051__b11339144173219">Service List</strong> and find <strong id="deh_01_0051__b16373201272815">Dedicated Host</strong>. On the displayed page, click <strong id="deh_01_0051__b840180181820">Allocate DeH</strong> in the upper right corner. If you cannot allocate a DeH (after the DeH ReadOnlyAccess permission is assigned), it indicates that the DeH ReadOnlyAccess permission has already taken effect.</li><li id="deh_01_0051__li12221641131415">Choose any other service in the <strong id="deh_01_0051__b147711010143217">Service List</strong>. If a message appears indicating that you have insufficient permissions to access the service, the DeH ReadOnlyAccess policy has already taken effect.</li></ul>
</li></ol>
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<div id="body1593756967273"><p id="deh_01_0052__p179735419717">Custom policies can be created to supplement the system-defined policies of DeH.</p>
<p id="deh_01_0052__p2079563182513">You can create custom policies in either of the following ways:</p>
<ul id="deh_01_0052__ul379563122510"><li id="deh_01_0052__li18795123142512">Visual editor: Select cloud services, actions, resources, and request conditions. This does not require knowledge of policy syntax.</li><li id="deh_01_0052__li163231110194013">JSON: Edit JSON policies from scratch or based on an existing policy.</li></ul>
<p id="deh_01_0052__p13798613134019">For details, see section "Creating a Custom Policy" in <em id="deh_01_0052__i721972515590">Identity and Access Management User Guide</em>. The following section contains examples of common DeH custom policies.</p>
<p id="deh_01_0052__p13798613134019">For details, see section "Creating a Custom Policy" in <em id="deh_01_0052__i634104781213">Identity and Access Management User Guide</em>. The following section contains examples of common DeH custom policies.</p>
<div class="section" id="deh_01_0052__section938914481384"><h4 class="sectiontitle">Example Custom DeH Policies</h4><ul id="deh_01_0052__ul3541174820819"><li id="deh_01_0052__li954174811818">Example 1: Authorize users to purchase and release DeHs.<pre class="screen" id="deh_01_0052__screen1984581351618">{
"Version": "1.1",
"Statement": [

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<h1 class="topictitle1">Managing Enterprise Projects</h1>
<div id="body8662426"><p id="deh_07_0000__p179027363157">An enterprise project is a way of managing cloud resources where cloud resources and members are centrally managed by project.</p>
<div id="body8662426"><p id="deh_07_0000__p179027363157">An enterprise project helps you centrally manage your DeH resources and users by project.</p>
<p id="deh_07_0000__p1767119364319">DeH supports enterprise project management. You can grant different personnel different permissions to manage different DeHs.</p>
<div class="section" id="deh_07_0000__en-us_topic_0161606883_section19513274336"><h4 class="sectiontitle">Creating an Enterprise Project and Assigning Permissions</h4><p id="deh_07_0000__p27788265531">Before using enterprise project to manage DeHs, you need to create an enterprise project and complete authorization by referring to <a href="#deh_07_0000__fig13850958203015">Figure 1</a>. </p>
<div class="fignone" id="deh_07_0000__fig13850958203015"><a name="deh_07_0000__fig13850958203015"></a><a name="fig13850958203015"></a><span class="figcap"><b>Figure 1 </b>Creating an enterprise project and assigning permissions</span><br><span><img id="deh_07_0000__image0851125810302" src="en-us_image_0000001248994857.png"></span></div>
</div>
<div class="section" id="deh_07_0000__section058131213218"><h4 class="sectiontitle">Using Enterprise Project to Manage DeHs</h4><ul id="deh_07_0000__en-us_topic_0161606883_ul1299113371339"><li id="deh_07_0000__li1781005923210">Select an enterprise project when purchasing a DeH. For details, see <a href="deh_01_0012.html">Allocating DeHs</a>.</li><li id="deh_07_0000__li1112553194713">On the Enterprise Project Management page, you can add existing DeHs to an enterprise project.</li></ul>
<div class="section" id="deh_07_0000__section058131213218"><h4 class="sectiontitle">Using Enterprise Project to Manage DeHs</h4><ul id="deh_07_0000__en-us_topic_0161606883_ul1299113371339"><li id="deh_07_0000__li1781005923210">Select an enterprise project when purchasing a DeH. For details, see <a href="deh_01_0012.html">Allocating DeHs</a>.</li><li id="deh_07_0000__li1112553194713">On the <strong id="deh_07_0000__b14871192014272">Enterprise Project Management</strong> page, you can add existing DeHs to an enterprise project.</li></ul>
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<h1 class="topictitle1">What Is DeH?</h1>
<div id="body1483864743552"><p id="deh_faq_0001__p0254842113710">Dedicated Host (DeH) provides dedicated physical hosts to ensure isolation, security, and performance for your ECSs. You can bring your own license (BYOL) to DeH to reduce the costs on software licenses and facilitate the independent management of ECSs. </p>
<div id="body1483864743552"><p id="deh_faq_0001__p0254842113710">A Dedicated Host (DeH) is a physical server fully dedicated for your use to ensure isolation, security, and performance for your ECSs. You can bring your own license (BYOL) to DeH to reduce the costs on software licenses and facilitate the independent management of ECSs.</p>
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<h1 class="topictitle1">What Should I Do If I Fail to Create an ECS on a DeH?</h1>
<div id="body1484839453949"><p id="deh_faq_0004__p52614780232618">The following may cause the failure in creating an ECS on a DeH: </p>
<ul id="deh_faq_0004__ul3970413023272"><li id="deh_faq_0004__li2016143823272">The ECS flavor you selected is not supported by your DeH.<p id="deh_faq_0004__p18551931232838"><a name="deh_faq_0004__li2016143823272"></a><a name="li2016143823272"></a>For the ECS flavors supported by each DeH type, see <a href="deh_01_0005.html">Overview</a>.</p>
</li><li id="deh_faq_0004__li14627670232752">Your DeH resources are insufficient, resulting in failure in creating an ECS with the specifications you selected.<p id="deh_faq_0004__p53179155233027"><a name="deh_faq_0004__li14627670232752"></a><a name="li14627670232752"></a>You can check whether the remaining vCPU resources and memory size of your DeH are sufficient for creating an ECS with the specifications you selected. If the resources are insufficient, you need to apply for more DeH resources or delete some ECSs from your DeH.</p>
<ul id="deh_faq_0004__ul3970413023272"><li id="deh_faq_0004__li2016143823272">The ECS flavor you selected is not supported by your DeH.<p id="deh_faq_0004__p18551931232838"><a name="deh_faq_0004__li2016143823272"></a><a name="li2016143823272"></a>To avoid this, select an ECS flavor that is supported by your DeH. For the ECS flavors supported by each DeH type, see <a href="deh_01_0005.html">Overview</a>.</p>
</li><li id="deh_faq_0004__li14627670232752">Your DeH resources are insufficient.<p id="deh_faq_0004__p53179155233027"><a name="deh_faq_0004__li14627670232752"></a><a name="li14627670232752"></a>You can check whether the remaining vCPU resources and memory size of your DeH are sufficient for creating an ECS with the specifications you selected. If the resources are insufficient, you need to apply for more DeH resources or delete some ECSs from your DeH.</p>
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<h1 class="topictitle1">What Are the Differences Between DeHs and BMSs?</h1>
<div id="body1538107301898"><p id="deh_faq_0006__p345517914589">Bare metal servers and dedicated hosts are physically-isolated servers dedicated to individual tenants. Their differences are as follows:</p>
<ul id="deh_faq_0006__ul1165311325810"><li id="deh_faq_0006__li136531613115814">DeH: A dedicated host is fully exclusive for your ECSs, but cannot be directly used for running workloads. You can deploy ECSs for running workloads on a dedicated host.</li><li id="deh_faq_0006__li18653141365819">BMS: A BMS is used as a server and can be directly used for running your services.</li></ul>
<ul id="deh_faq_0006__ul1165311325810"><li id="deh_faq_0006__li136531613115814">DeH: A dedicated host is fully exclusive for your ECSs, but cannot be directly used for running workloads. You can deploy ECSs for running workloads on a dedicated host.</li><li id="deh_faq_0006__li18653141365819">BMS: A BMS is used as a physical server and can be directly used for running your services.</li></ul>
<div class="fignone" id="deh_faq_0006__fig1099284312819"><span class="figcap"><b>Figure 1 </b>Differences between DeHs and BMSs</span><br><span><img id="deh_faq_0006__image2099384382810" src="en-us_image_0000001441682817.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="deh_faq_0006__table8831105184616" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Differences between DeHs and BMSs</caption><thead align="left"><tr id="deh_faq_0006__row1183214515465"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.4.2.4.1.1"><p id="deh_faq_0006__p68321551154618"><strong id="deh_faq_0006__b27961622181814">Item</strong></p>
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</tr>
<tr id="deh_faq_0006__row14833145124611"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.4.2.4.1.1 "><p id="deh_faq_0006__p883315104615">Usage</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.4.2.4.1.2 "><p id="deh_faq_0006__p108334515468">Provisioning of multiple ECSs on a DeH</p>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.4.2.4.1.2 "><p id="deh_faq_0006__p108334515468">Used to accommodate ECSs</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.4.2.4.1.3 "><p id="deh_faq_0006__p118336518465">Used as a whole server</p>
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<h1 class="topictitle1">What Are the Differences Between DeH and DeC?</h1>
<div id="body1538107301898"><ul id="deh_faq_0007__ul175903941111"><li id="deh_faq_0007__li25908910111">Scenario<p id="deh_faq_0007__p191258551517"><a name="deh_faq_0007__li25908910111"></a><a name="li25908910111"></a>DeC can provide a complete resource isolation solution by using dedicated services, such as Dedicated Distributed Storage Service (DSS) Dedicated Enterprise Storage Service (DESS), and Bare Metal Server (BMS).</p>
<p id="deh_faq_0007__p1981201271118">DeH can provide only isolated compute hosts, which are more flexible and suitable for customers who have requirements for computing resource isolation and flexibility.</p>
</li><li id="deh_faq_0007__li10590119101117">Function<p id="deh_faq_0007__p96252611158"><a name="deh_faq_0007__li10590119101117"></a><a name="li10590119101117"></a>You need to apply for an independent DeC account before requesting DeC resources. DeC resources and public ECSs belong to different VPCs. Common ECSs cannot be migrated to a DeC, and ECSs in a DeC cannot be migrated to common resource pools.</p>
<p id="deh_faq_0007__p1517911168115">ECSs created on a DeH and ECSs in the public resource pool share the same VPC. So, stopped ECSs can be migrated between a DeH and a resource pool.</p>
<div id="body1538107301898"><ul id="deh_faq_0007__ul175903941111"><li id="deh_faq_0007__li25908910111">Scenarios<p id="deh_faq_0007__p191258551517"><a name="deh_faq_0007__li25908910111"></a><a name="li25908910111"></a>DeC provides a complete resource isolation solution by using dedicated services, such as Dedicated Distributed Storage Service (DSS) Dedicated Enterprise Storage Service (DESS), and Bare Metal Server (BMS).</p>
<p id="deh_faq_0007__p1981201271118">DeH provides only isolated compute hosts, which are more flexible and suitable for customers who demand computing resource isolation and flexibility.</p>
</li><li id="deh_faq_0007__li10590119101117">Functions<p id="deh_faq_0007__p96252611158"><a name="deh_faq_0007__li10590119101117"></a><a name="li10590119101117"></a>You need to apply for an independent DeC account before requesting DeC resources. DeC resources and public ECSs work in different VPCs. You cannot migrate public ECSs to a DeC or ECSs in a DeC to a public resource pool.</p>
<p id="deh_faq_0007__p1517911168115">ECSs created on a DeH and ECSs in the public resource pool share the same VPC. So, you can migrate a stopped ECS between a DeH and a resource pool.</p>
</li></ul>
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<h1 class="topictitle1">What Are the Differences Between DeHs and ECSs?</h1>
<div id="body1538107301898"><p id="deh_faq_0008__p55611051513">DeHs are dedicated physical servers where the virtualization environment is deployed and allows you to exclusively use physical servers. Your DeHs are physically isolated from servers of other users. After allocating a DeH, you can create ECSs on the DeH as well as plan physical server resources.</p>
<div id="body1538107301898"><p id="deh_faq_0008__p55611051513">DeHs are dedicated physical servers where the virtualization environment is deployed and are fully dedicated for your use. Your DeHs are physically isolated from those of other users. After creating a DeH, you can create ECSs on the DeH as well as plan physical server resources.</p>
<p id="deh_faq_0008__p8060118">Common ECSs allow multiple users to share physical server resources.</p>
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<h1 class="topictitle1">How Can I Query the Number of Available Resources on a DeH?</h1>
<div id="body1538107301898"><p id="deh_faq_0009__p2908554145014">You can view the total resources and available resources (vCPUs and memory) of each DeH on the DeH console.</p>
<p id="deh_faq_0009__p49394576507"></p>
<div id="body1538107301898"><p id="deh_faq_0009__p2908554145014">You can view the total and available resources (vCPUs and memory) of each DeH on the DeH console.</p>
<div class="fignone" id="deh_faq_0009__fig48651568461"><span class="figcap"><b>Figure 1 </b>Querying available resources of a DeH</span><br><span><img id="deh_faq_0009__image364719191475" src="en-us_image_0000001540675997.png"></span></div>
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<h1 class="topictitle1">Does DeH Support Capacity Expansion?</h1>
<div id="body1538107301898"><p id="deh_faq_0010__p8060118">No. The hardware configuration of DeHs is planned based on the specifications and quantity of ECSs to be provisioned. You can buy more DeHs based on your service requirements.</p>
<div id="body1538107301898"><p id="deh_faq_0010__p8060118">No. The hardware configuration of a DeH is planned based on the specifications and quantity of ECSs to be provisioned. If the current DeH capacity cannot meet your service requirements, you can buy more DeHs based on your service requirements.</p>
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<h1 class="topictitle1">How Can I Use the BYOL Mode on a DeH?</h1>
<div id="body1538107301898"><p id="deh_faq_0011__p8060118">Perform the following steps:</p>
<ol id="deh_faq_0011__ol49819128264"><li id="deh_faq_0011__li129821215261">Check whether the license terms and conditions allow you to use the software license on DeHs. Contact the software license provider to confirm whether your existing license can be used on the DeHs. If yes, go to the next step.</li><li id="deh_faq_0011__li136921116162717">Submit a review form to your software license provider. You can obtain the values of DeH parameters, such as vCPUs, memory size, sockets, and physical cores, form on the DeH console.</li></ol>
<h1 class="topictitle1">How Do I Bring My Own Licenses to a DeH?</h1>
<div id="body1538107301898"><p id="deh_faq_0011__p8060118">To use your own licenses on a DeH, do as follows:</p>
<ol id="deh_faq_0011__ol49819128264"><li id="deh_faq_0011__li129821215261">Check whether the license terms and conditions allow you to use the software license on DeHs. Contact the software license provider to confirm whether your existing license can be used on the DeHs. If yes, go to the next step.</li><li id="deh_faq_0011__li136921116162717">Submit a review form to your software license provider. You can obtain the values of DeH parameters, such as vCPUs, memory size, sockets, and physical cores, from the DeH console.</li></ol>
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<h1 class="topictitle1">What Are the Differences Between ECSs on DeHs and ECSs on Shared Hosts?</h1>
<div id="body1538123919288"><p id="deh_faq_0012__p8060118">ECSs on DeHs provide better computing performance and stability than the ECSs on shared hosts because resources are exclusively used by the ECSs on DeHs.</p>
<h1 class="topictitle1">What Are the Differences Between ECSs on DeHs and Those on Shared Hosts?</h1>
<div id="body1538123919288"><p id="deh_faq_0012__p8060118">ECSs on DeHs provide better computing performance and stability than those on shared hosts because resources are exclusively used by the ECSs on DeHs.</p>
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<h1 class="topictitle1">Can I Modify Specifications of ECSs on DeHs?</h1>
<h1 class="topictitle1">Can I Modify the Specifications of ECSs on DeHs?</h1>
<div id="body1538123919288"><p id="deh_faq_0015__p178402489589">Yes. You can modify specifications of ECSs on DeHs by performing the operations described in <a href="deh_01_0028.html">Modifying Specifications of ECSs on DeHs</a>.</p>
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<h1 class="topictitle1">When a DeH Is Needed?</h1>
<div id="body1561101115883"><p id="deh_faq_0019__p8060118">When your services are required to meet high compliance, security, or performance requirements, you can purchase DeHs. For more information, see <a href="deh_01_0008.html">Application Scenarios</a>.</p>
<div id="body1561101115883"><p id="deh_faq_0019__p8060118">When your services demand high compliance, security, or performance, you can purchase a DeH and deploy the service on it. For more information, see <a href="deh_01_0008.html">Application Scenarios</a>.</p>
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<h1 class="topictitle1">Can I DeHs by Myself?</h1>
<div id="body1561101115884"><p id="deh_faq_0020__p8060118">Yes. You can DeHs on the management console. For more information, see <a href="deh_01_0012.html">Allocating DeHs</a>.</p>
<h1 class="topictitle1">Can I Allocate DeHs by Myself?</h1>
<div id="body1561101115884"><p id="deh_faq_0020__p8060118">Yes. You can allocate DeHs on the management console. For more information, see <a href="deh_01_0012.html">Allocating DeHs</a>.</p>
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<h1 class="topictitle1">Can DeHs Be Used to Build Websites?</h1>
<div id="body1573809052280"><p id="deh_faq_0021__p8060118">ECSs or ECSs created on DeHs can be used to build websites.</p>
<h1 class="topictitle1">Can I Use DeHs to Build Websites?</h1>
<div id="body1573809052280"><p id="deh_faq_0021__p8060118">You can use ECSs or the ECSs created on DeHs to build websites.</p>
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<h1 class="topictitle1">What Hypervisor Is Used by DeH?</h1>
<h1 class="topictitle1">What Hypervisor Is Used by DeHs?</h1>
<div id="body1579418821295"><p id="deh_faq_0022__p8060118">DeHs use KVM. Only KVM ECSs can be deployed on the DeHs.</p>
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</li>
<li class="ulchildlink"><strong><a href="deh_faq_0019.html">When a DeH Is Needed?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_0021.html">Can DeHs Be Used to Build Websites?</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_faq_0021.html">Can I Use DeHs to Build Websites?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_0020.html">Can I DeHs by Myself?</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_faq_0020.html">Can I Allocate DeHs by Myself?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_0022.html">What Hypervisor Is Used by DeH?</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_faq_0022.html">What Hypervisor Is Used by DeHs?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_0005.html">Does Each DeH Have a Unique ID?</a></strong><br>
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</li>
<li class="ulchildlink"><strong><a href="deh_faq_0002.html">What Is BYOL?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_0011.html">How Can I Use the BYOL Mode on a DeH?</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_faq_0011.html">How Do I Bring My Own Licenses to a DeH?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_090114.html">Can I Attach an EVS Disk to a DeH?</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="deh_faq_090115.html">Is There a Limit on the Minimum or Maximum Number of DeHs That Can Be Purchased?</a></strong><br>
<li class="ulchildlink"><strong><a href="deh_faq_090115.html">Is There a Limit on the Number of DeHs That I Can Purchase?</a></strong><br>
</li>
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