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zhangyue
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Reviewed-by: Miskanin, Jan <jan.miskanin@t-systems.com> Co-authored-by: zhangyue <zhangyue164@huawei.com> Co-committed-by: zhangyue <zhangyue164@huawei.com>
65 lines
14 KiB
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65 lines
14 KiB
HTML
<a name="evs_faq_0025"></a><a name="evs_faq_0025"></a>
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<h1 class="topictitle1">Why Can't I Attach My Disk to a Server?</h1>
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<div id="body8662426"><div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section690984914297"><h4 class="sectiontitle">Symptom</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267243048_p781618547294">My disk cannot be attached to a <span id="evs_faq_0025__en-us_topic_0000001072682645_text1512313388489">server</span>.</p>
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<div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section192121013163019"><h4 class="sectiontitle">Troubleshooting</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p17987205213470">Possible causes are listed here in order of their probability.</p>
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<p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p997211345215">If the fault persists after you have ruled out one cause, move on to the next one in the list.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_table11639162722113" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Troubleshooting</caption><thead align="left"><tr id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_row563912711214"><th align="left" class="cellrowborder" valign="top" width="31.290000000000003%" id="mcps1.3.2.4.2.3.1.1"><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p17639192710215">Symptom</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="68.71000000000001%" id="mcps1.3.2.4.2.3.1.2"><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p1063918274214">Solution</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_row1163911274215"><td class="cellrowborder" valign="top" width="31.290000000000003%" headers="mcps1.3.2.4.2.3.1.1 "><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p1663915273217">The target server on the <strong id="evs_faq_0025__b11911729121112">Attach Disk</strong> page could not be found.</p>
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<td class="cellrowborder" valign="top" width="68.71000000000001%" headers="mcps1.3.2.4.2.3.1.2 "><ul id="evs_faq_0025__ul5653156131616"><li id="evs_faq_0025__li1653135617168">Go to <a href="#evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section83925230328">Check Whether the Disk and Server Are in the Same AZ</a>.</li><li id="evs_faq_0025__li98459122319"><span id="evs_faq_0025__ph142612010318">Cloud servers created from ISO images are only used for OS installation. They have limited functions and cannot have EVS disks attached.</span></li></ul>
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</tr>
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<tr id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_row76394277211"><td class="cellrowborder" valign="top" width="31.290000000000003%" headers="mcps1.3.2.4.2.3.1.1 "><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p6639112762113">The <strong id="evs_faq_0025__b1093681891220">Attach</strong> button is grayed out.</p>
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<td class="cellrowborder" valign="top" width="68.71000000000001%" headers="mcps1.3.2.4.2.3.1.2 "><ul id="evs_faq_0025__en-us_topic_0000001072682645_ul22762457583"><li id="evs_faq_0025__en-us_topic_0000001072682645_li12761545175813">Go to <a href="#evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section129621513133311">Maximum Number of Disks That Can Be Attached to the Server Has Been Reached</a>.</li><li id="evs_faq_0025__en-us_topic_0000001072682645_li24817183599">Go to <a href="#evs_faq_0025__en-us_topic_0000001072682645_section4732195892910">Check Whether the Disk Has Been Added to a Replication Pair</a>.</li></ul>
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</td>
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</tr>
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<tr id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_row1063915276211"><td class="cellrowborder" valign="top" width="31.290000000000003%" headers="mcps1.3.2.4.2.3.1.1 "><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p11639102752118">An incorrect OS type warning is displayed when a shared disk is attached.</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.71000000000001%" headers="mcps1.3.2.4.2.3.1.2 "><p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p96391627162120">Go to <a href="#evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section19691130175413">Check Whether the Servers Attached with the Shared Disk Are Running the Same Type of OS</a>.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section83925230328"><a name="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section83925230328"></a><a name="en-us_topic_0000001072682645_en-us_topic_0267670624_section83925230328"></a><h4 class="sectiontitle">Check Whether the Disk and Server Are in the Same AZ</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_p8902818202711"><strong id="evs_faq_0025__b3361171811141">Symptom</strong>: After you click <strong id="evs_faq_0025__b97794303165">Attach</strong>, the target <span id="evs_faq_0025__en-us_topic_0000001072682645_text189021018122717">server</span> cannot be found on the <strong id="evs_faq_0025__b1817210459163">Attach Disk</strong> page.</p>
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<p id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_p8060118"><strong id="evs_faq_0025__b7522169141712">Solution</strong>: A disk can only be attached to a <span id="evs_faq_0025__en-us_topic_0000001072682645_text1299417110261">server</span> in the same AZ and region. The <strong id="evs_faq_0025__b1734354917199">Attach Disk</strong> page filters and shows all the <span id="evs_faq_0025__en-us_topic_0000001072682645_text1828217892319">server</span>s that the disk can be attached to. Determine whether your disk data is required.</p>
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<ul id="evs_faq_0025__en-us_topic_0000001072682645_ul1458715203317"><li id="evs_faq_0025__en-us_topic_0000001072682645_li1058161519331">If the disk data is no longer needed, delete the disk, and then create a new disk in the AZ where your target <span id="evs_faq_0025__en-us_topic_0000001072682645_text93081551163313">server</span> is located.</li><li id="evs_faq_0025__en-us_topic_0000001072682645_li9737191033414">If the disk data is still required, create a new disk with the same data in the target AZ. The procedure is as follows:<ol id="evs_faq_0025__en-us_topic_0000001072682645_ol17327102820448"><li id="evs_faq_0025__en-us_topic_0000001072682645_li3238556193">Create a backup for the disk.<div class="fignone" id="evs_faq_0025__fig15602182304620"><span class="figcap"><b>Figure 1 </b>Create Backup</span><br><span><img id="evs_faq_0025__evs_faq_0045_image260222334617" src="en-us_image_0000001622372417.png"></span></div>
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</li><li id="evs_faq_0025__en-us_topic_0000001072682645_li109281752891">Create a new disk from this backup. During the creation, select the target AZ. You can also change the settings of <strong id="evs_faq_0025__b11649120172016">Disk Type</strong> and <strong id="evs_faq_0025__b519319372013">Advanced Settings</strong> if needed.<div class="fignone" id="evs_faq_0025__fig1727293916494"><span class="figcap"><b>Figure 2 </b>Create from backup</span><br><span><img id="evs_faq_0025__evs_faq_0045_image1027273904916" src="en-us_image_0000001572095150.png"></span></div>
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</li><li id="evs_faq_0025__en-us_topic_0000001072682645_li428217406465">After the disk is created, click <strong id="evs_faq_0025__b42341723202017">Attach</strong>. Your target <span id="evs_faq_0025__en-us_topic_0000001072682645_text7209208124712">server</span> is displayed on the <strong id="evs_faq_0025__b16207105315207">Attach Disk</strong> page.</li></ol>
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</li></ul>
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</div>
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<div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section129621513133311"><a name="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section129621513133311"></a><a name="en-us_topic_0000001072682645_en-us_topic_0267670624_section129621513133311"></a><h4 class="sectiontitle">Maximum Number of Disks That Can Be Attached to the Server Has Been Reached</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_p1461415162819"><strong id="evs_faq_0025__b3998124142316">Symptom</strong>: The <strong id="evs_faq_0025__b615714575235">Attach</strong> button is grayed out.</p>
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<p id="evs_faq_0025__en-us_topic_0000001072682645_p9414319112913"><strong id="evs_faq_0025__b1045918186453">Solution</strong>:</p>
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<ul id="evs_faq_0025__en-us_topic_0000001072682645_ul158232672915"><li id="evs_faq_0025__en-us_topic_0000001072682645_li126221391330">Non-shared disk: When you hover the mouse over the <strong id="evs_faq_0025__b164116278119">Attach</strong> button, message "This operation can be performed only when the disk is in the Available state" is displayed.<p id="evs_faq_0025__en-us_topic_0000001072682645_p56481640123316">A non-shared disk can only be attached to one <span id="evs_faq_0025__en-us_topic_0000001072682645_text15151636153219">server</span>. If the disk status is <strong id="evs_faq_0025__b1781819146282">In-use</strong>, the disk has been attached. You can detach the disk, wait until the disk status changes to <strong id="evs_faq_0025__b1331912575287">Available</strong>, and then attach the disk to the target <span id="evs_faq_0025__en-us_topic_0000001072682645_text154751518163517">server</span>.</p>
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</li></ul>
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<ul id="evs_faq_0025__en-us_topic_0000001072682645_ul19935259316"><li id="evs_faq_0025__en-us_topic_0000001072682645_li1499316256319">Shared disk: When you hover the mouse over the <strong id="evs_faq_0025__b158410330116">Attach</strong> button, message "This operation cannot be performed because the maximum number of servers that a shared disk can be attached to has been reached" is displayed.<p id="evs_faq_0025__en-us_topic_0000001072682645_p15995112763514">A shared disk can be attached to a maximum of 16 <span id="evs_faq_0025__en-us_topic_0000001072682645_text106124813347">server</span>s, but you can detach the shared disk from one <span id="evs_faq_0025__en-us_topic_0000001072682645_text39671038193416">server</span> and attach it to a new one if needed.</p>
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</li></ul>
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</div>
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<div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_section4732195892910"><a name="evs_faq_0025__en-us_topic_0000001072682645_section4732195892910"></a><a name="en-us_topic_0000001072682645_section4732195892910"></a><h4 class="sectiontitle">Check Whether the Disk Has Been Added to a Replication Pair</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_p0651332519"><strong id="evs_faq_0025__b16511721163114">Symptom</strong>: The <strong id="evs_faq_0025__b36521721163116">Attach</strong> button is grayed out. When you hover the mouse over the <strong id="evs_faq_0025__b1172119174505">Attach</strong> button, message "This operation cannot be performed on a disk in a replication pair" is displayed.</p>
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<p id="evs_faq_0025__en-us_topic_0000001072682645_p66519323118"><strong id="evs_faq_0025__b16606164783317">Solution</strong>: Delete the replication pair and attach the disk again.</p>
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<ol id="evs_faq_0025__en-us_topic_0000001072682645_ol1545310613513"><li id="evs_faq_0025__en-us_topic_0000001072682645_li54530617515"><span>Choose <strong id="evs_faq_0025__b842352706162120">Storage</strong> > <strong id="evs_faq_0025__b842352706162124">Storage Disaster Recovery Service</strong>.</span><p><p id="evs_faq_0025__en-us_topic_0000001072682645_p954659457">The <strong id="evs_faq_0025__b17329180123418">Storage Disaster Recovery Service</strong> page is displayed.</p>
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</p></li><li id="evs_faq_0025__en-us_topic_0000001072682645_li165981903715"><span>Locate the protection group containing the disk and click the protection group name.</span><p><p id="evs_faq_0025__en-us_topic_0000001072682645_p1254625820919">The protection group details page is displayed.</p>
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</p></li><li id="evs_faq_0025__en-us_topic_0000001072682645_li2254172101118"><span>Click the <strong id="evs_faq_0025__en-us_topic_0035268496_b84235270682354">Replication Pairs</strong> tab.</span><p><p id="evs_faq_0025__en-us_topic_0000001072682645_p22434361119">Check that the disk in the <strong id="evs_faq_0025__b37677163519">Production Site Disk</strong> column is the target disk.</p>
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</p></li><li id="evs_faq_0025__en-us_topic_0000001072682645_li117573731110"><span>Confirm the information and click <strong id="evs_faq_0025__b206377175351">Delete</strong> in the <strong id="evs_faq_0025__b58911022153516">Operation</strong> column.</span></li><li id="evs_faq_0025__en-us_topic_0000001072682645_li1091092761210"><span>After the replication pair is deleted, return to the disk list, and the disk can be attached.</span></li></ol>
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<div class="section" id="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section19691130175413"><a name="evs_faq_0025__en-us_topic_0000001072682645_en-us_topic_0267670624_section19691130175413"></a><a name="en-us_topic_0000001072682645_en-us_topic_0267670624_section19691130175413"></a><h4 class="sectiontitle">Check Whether the Servers Attached with the Shared Disk Are Running the Same Type of OS</h4><p id="evs_faq_0025__en-us_topic_0000001072682645_p72717151519"><strong id="evs_faq_0025__b7980144143711">Symptom</strong>: After you click <strong id="evs_faq_0025__b988624517376">Attach</strong>, the target <span id="evs_faq_0025__text204529573811">server</span> cannot be selected on the <strong id="evs_faq_0025__b3924101018380">Attach Disk</strong> page, and message "A shared disk must be attached to servers with the same OS type" is displayed.</p>
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<p id="evs_faq_0025__en-us_topic_0000001072682645_p1727113115150"><strong id="evs_faq_0025__b9231172163912">Solution</strong>: This message indicates that the OS type of the target <span id="evs_faq_0025__en-us_topic_0000001072682645_text1387314810221">server</span> is inconsistent with that of the <span id="evs_faq_0025__en-us_topic_0000001072682645_text418115303214">server</span>s attached with the shared disk. You can change the OS type based your service requirements.</p>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="evs_01_0078.html">Attachment</a></div>
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