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Lu, Huayi 95132e24fc DWS UMN 830.201_new version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Reviewed-by: Rechenburg, Matthias <matthias.rechenburg@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2024-05-27 11:54:34 +00:00

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<a name="EN-US_TOPIC_0000001707293893"></a><a name="EN-US_TOPIC_0000001707293893"></a>
<h1 class="topictitle1">DR Management</h1>
<div id="body8662426"><div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section4432124194612"><a name="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section4432124194612"></a><a name="en-us_topic_0000001423159725_section4432124194612"></a><h4 class="sectiontitle">Starting a DR Task</h4><ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol6493175563012"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li24941355193017"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li94951155143018"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li25916796163327"><span>Click <strong id="EN-US_TOPIC_0000001707293893__b4593185510166">Start</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b14593165501618">Operation</strong> column of the target DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p669410319512"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image16398055757" src="figure/en-us_image_0000001711599192.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li48630339105019"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__uicontrol1310109410525"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p48075126123536">The DR status will change to <strong id="EN-US_TOPIC_0000001707293893__b75720470323">Starting</strong>. The process will take some time. After the task is started, the DR status will change to <strong id="EN-US_TOPIC_0000001707293893__b185741624113316">Running</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note982425211381"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul69231148191018"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1793023585010">You can start a DR task that is in the <strong id="EN-US_TOPIC_0000001707293893__b1729217329133">Not started</strong>/<strong id="EN-US_TOPIC_0000001707293893__b929812326136">Startup failed</strong>/<strong id="EN-US_TOPIC_0000001707293893__b162982320132">Stopped</strong> state.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1092311489109">After you start the DR task, you cannot perform operations, including restoration, scale-out, upgrade, restart, node replacement, and password update, on the production cluster or DR cluster. Backup is also not allowed on the DR cluster. Exercise caution when performing this operation.</li></ul>
</div></div>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section68813160462"><h4 class="sectiontitle">Stopping the DR Task</h4><ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol611651411421"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li9116171494216"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li811681414421"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_1">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li195271723124216"><span>Click <strong id="EN-US_TOPIC_0000001707293893__b7302203412014">Stop</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b13025343204">Operation</strong> column of the target DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p2291510094"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image17449510890" src="figure/en-us_image_0000001711439700.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li02629218477"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__uicontrol1243181611478"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p1432111614716">The DR status will change to <strong id="EN-US_TOPIC_0000001707293893__b33911242113410">Stopping</strong>. The process will take some time. After the DR task is stopped, the status will change to <strong id="EN-US_TOPIC_0000001707293893__b1929010483520">Stopped</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note198814654210"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul5775134318106"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1099695645110">Only DR tasks in the <strong id="EN-US_TOPIC_0000001707293893__b43510392134">Running</strong> or <strong id="EN-US_TOPIC_0000001707293893__b74153951313">Stop failed</strong> state can be stopped.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li19775174301012">Data cannot be synchronized after a DR task is stopped.</li></ul>
</div></div>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section186421928164617"><h4 class="sectiontitle">Switching to the DR Cluster</h4><ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol16599224443"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li459914214411"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li10599172114419"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_2">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li196001234413"><span>Click <strong id="EN-US_TOPIC_0000001707293893__b141791153132516">Switch to DR Cluster</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b8179135322514">Operation</strong> column of the target DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p1314760131019"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image1158210191014" src="figure/en-us_image_0000001759518593.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li91130154816"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__uicontrol1872016482"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p10871120487">The DR status will change to <strong id="EN-US_TOPIC_0000001707293893__b19646184092713">DR switching</strong>.</p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p458415421692">After the switchover is successful, the DR status will change to the original status.</p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note206009220442"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul682023717106"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li14665115912261">To perform a switchover when the DR cluster is running properly, click <strong id="EN-US_TOPIC_0000001707293893__b8885134110456">Switch to DR Cluster</strong>.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li534343517530">You can perform a DR switchover when the DR task is in the <strong id="EN-US_TOPIC_0000001707293893__b188905017144">Running</strong> state.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1082615373105">During a switchover, the original production cluster is not available.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li11162143121313">Recovery Point Object (RPO) refers to the point in time to which a system and data must be restored after a disaster occurs. Its value varies by cluster status.<ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul5735135051312"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li105191115131612">Production cluster in the <strong id="EN-US_TOPIC_0000001707293893__b73842527378">Available</strong> state: RPO = 0</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li29571937409">Production cluster in the <strong id="EN-US_TOPIC_0000001707293893__b18372115105316">Unavailable</strong> state: A zero RPO may not be achieved, but data can at least be restored to that of the latest successful DR synchronization (<strong id="EN-US_TOPIC_0000001707293893__b124595516232">Last DR Succeeded</strong>). For details, see <a href="dws_01_00083.html">Viewing DR Information</a>.</li></ul>
</li></ul>
</div></div>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section14319104614293"><h4 class="sectiontitle">Exception Switchover</h4><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p91961838183810"><strong id="EN-US_TOPIC_0000001707293893__b643975118380">Scenario</strong></p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p124731755194610">The production cluster is unavailable, the DR cluster is normal, and the DR status is <strong id="EN-US_TOPIC_0000001707293893__b166432595517">Abnormal</strong>.</p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p316575913385"><strong id="EN-US_TOPIC_0000001707293893__b1760055395">Procedure</strong></p>
<ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol588534917290"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li188856497293"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li18851492296"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_3">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li288564902917"><span>Choose <strong id="EN-US_TOPIC_0000001707293893__b211175395517">More</strong> &gt; <strong id="EN-US_TOPIC_0000001707293893__b113955597924656">Exception Switchover</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b142752581824656">Operation</strong> column of the target DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p513217402109"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image10112141181012" src="figure/en-us_image_0000001759358737.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li7885104942916"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__uicontrol1145070375"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p2088510498297">The <strong id="EN-US_TOPIC_0000001707293893__b19561153216543">Status</strong> will change to <strong id="EN-US_TOPIC_0000001707293893__b19527757114719">Switchover in progress</strong>.</p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p17885149152911">After the switchover is successful, the DR status will change to the original status. In this procedure, the DR status will change back to <strong id="EN-US_TOPIC_0000001707293893__b1695182919595">Abnormal</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note18852049142914"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul7886104942912"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li13420124273016">To perform a switchover when the DR cluster is abnormal or the production cluster is faulty, click <strong id="EN-US_TOPIC_0000001707293893__b8164135565812">Exception Switchover</strong>.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1624795614512">DR exception switchover is supported only by clusters of version 8.1.2 or later.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li5886949172915">Before a switchover, check the latest synchronization time in the DR cluster. The DR cluster will serve as a production cluster after an abnormal switchover, but the data that failed to be synchronized from the original production cluster to the DR cluster will not exist in the DR cluster.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li550618341137">If the DR type is <strong id="EN-US_TOPIC_0000001707293893__b9571261805">Cross-region DR</strong>, the switchover can be performed only in the region where the standby cluster is located.</li></ul>
</div></div>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section2452043144219"><h4 class="sectiontitle">Performing a DR Switchback</h4><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p16571156174619"><strong id="EN-US_TOPIC_0000001707293893__b115715654614">Scenario</strong></p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p047619984717">After abnormal switchover, if you have confirmed that the original production cluster was recovered, you can perform a switchback.</p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p65721644616"><strong id="EN-US_TOPIC_0000001707293893__b14572168464">Procedure</strong></p>
<ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol15452543114215"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li154521043114216"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1545204304217"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_4">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li94521843184210"><span>Click <strong id="EN-US_TOPIC_0000001707293893__b10315712790">DR Recovery</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b19315141220917">Operation</strong> column of a DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p472072831116"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image8493142901119" src="figure/en-us_image_0000001711599196.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li5498639173411"><span>In the displayed dialog box, set <strong id="EN-US_TOPIC_0000001707293893__b217317241816">Synchronization Mode</strong> to <strong id="EN-US_TOPIC_0000001707293893__b897412319815">Incremental</strong> or <strong id="EN-US_TOPIC_0000001707293893__b29251634585">Full</strong>.</span><p><div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note76791634439"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p367917317436">You are advised to set <strong id="EN-US_TOPIC_0000001707293893__b1616511369115">Synchronization Mode</strong> to <strong id="EN-US_TOPIC_0000001707293893__b181911154141113">Incremental</strong> when updating a DR creation task.</p>
</div></div>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li17452194364216"><span>Click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_uicontrol15452104317428"><b>OK</b></span>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p745334374214">The <strong id="EN-US_TOPIC_0000001707293893__b66591679561">Status</strong> will change to <strong id="EN-US_TOPIC_0000001707293893__b105821225996">Recovering</strong>.</p>
<p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p134531943124212">After the DR recovery is successful, the <strong id="EN-US_TOPIC_0000001707293893__b1525405645518">Status</strong> will change to <strong id="EN-US_TOPIC_0000001707293893__b13668185335513">Running</strong>.</p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note17453114312424"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul18465239479"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li94531043174211">DR is supported only by clusters of 8.1.2 or later.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li426926194718">During DR recovery, data in the DR cluster will be deleted, and the DR relationship will be re-established with the new production cluster.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1265816588316">If the DR type is <strong id="EN-US_TOPIC_0000001707293893__b955216511402">Cross-region DR</strong>, the recovery can be performed only in the region where the standby cluster is located.</li></ul>
</div></div>
</p></li></ol>
</div>
<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section1869120274302"><h4 class="sectiontitle">Updating DR Configurations</h4><ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol71803891610"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li6029015714233"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li38983837105359"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_5">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li129909103263"><span>In the DR list, click the DR name to go to the DR information page.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li29903558266"><span>In the <strong id="EN-US_TOPIC_0000001707293893__b1448119322283">DR Configurations</strong> area, click <strong id="EN-US_TOPIC_0000001707293893__b13407415284">Modify</strong>.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p3404013193011"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image940414134307" src="figure/en-us_image_0000001759518597.png" title="Click to enlarge" class="imgResize"></span></p>
<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note1088013810209"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul1225716581118"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li66781220125416">Only DR tasks in the <strong id="EN-US_TOPIC_0000001707293893__b19921132391415">Not started</strong> or <strong id="EN-US_TOPIC_0000001707293893__b1692118234144">Stopped</strong> state can be modified.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li525815161110">The new configuration takes effect after DR is restarted.</li></ul>
</div></div>
</p></li></ol>
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<div class="section" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section1631535174714"><a name="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_section1631535174714"></a><a name="en-us_topic_0000001423159725_section1631535174714"></a><h4 class="sectiontitle">Deleting DR Tasks</h4><ol id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ol7234135954410"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li523455918442"><span>Log in to the GaussDB(DWS) console.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li11234195914442"><span>In the navigation pane on the left, choose <strong id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159661_b1282816511795_6">DR Tasks</strong>.</span></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li112351559144413"><span>Click <strong id="EN-US_TOPIC_0000001707293893__b3751191052515">Delete</strong> in the <strong id="EN-US_TOPIC_0000001707293893__b17751101072518">Operation</strong> column of the target DR task.</span><p><p id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p694130141216"><span><img id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_image2371181141216" src="figure/en-us_image_0000001759358741.png" title="Click to enlarge" class="imgResize"></span></p>
</p></li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li14164315489"><span>In the dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001707293893__uicontrol13421636144810"><b>OK</b></span>.</span><p><div class="p" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_p181117546484">The DR status will change to <strong id="EN-US_TOPIC_0000001707293893__b19358101282910">Deleting</strong>.<div class="note" id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_note20651543124819"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_ul25943216112"><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li1269162595510">You can delete a DR task when <strong id="EN-US_TOPIC_0000001707293893__b1172104171410">DR Status</strong> is <strong id="EN-US_TOPIC_0000001707293893__b1178174141410">Creation failed</strong>, <strong id="EN-US_TOPIC_0000001707293893__b6179174111147">Not started</strong>, <strong id="EN-US_TOPIC_0000001707293893__b717974151416">Startup failed</strong>, <strong id="EN-US_TOPIC_0000001707293893__b1217974113147">Stopped</strong>, <strong id="EN-US_TOPIC_0000001707293893__b6179124141418">Stop failed</strong>, or <strong id="EN-US_TOPIC_0000001707293893__b1018014412142">Abnormal</strong>.</li><li id="EN-US_TOPIC_0000001707293893__en-us_topic_0000001423159725_li18595142181115">Data cannot be synchronized after a DR task is deleted, and the deleted task cannot be restored.</li></ul>
</div></div>
</div>
</p></li></ol>
</div>
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<div>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_01_0080.html">Cluster DR</a></div>
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