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Huijuan, Wang
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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>
78 lines
8.5 KiB
HTML
78 lines
8.5 KiB
HTML
<a name="EN-US_TOPIC_0018073215"></a><a name="EN-US_TOPIC_0018073215"></a>
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<h1 class="topictitle1">Can I Attach Multiple Disks to an ECS?</h1>
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<div id="body1437550181838"><div class="p" id="EN-US_TOPIC_0018073215__p344571522314">Yes. The <span id="EN-US_TOPIC_0018073215__text15574111132710">ECS</span>s created after the disk function upgrade can have up to 60 attached disks.<ul id="EN-US_TOPIC_0018073215__ul7272419192820"><li id="EN-US_TOPIC_0018073215__li5272121915280">When you create an <span id="EN-US_TOPIC_0018073215__text28301112102714">ECS</span>, you can attach 24 disks to it.</li><li id="EN-US_TOPIC_0018073215__li7158205414262">After you create an <span id="EN-US_TOPIC_0018073215__text1660935054615">ECS</span>, you can attach up to 60 disks to it.
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0018073215__table134132505508" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Numbers of disks that can be attached to a newly created ECS</caption><thead align="left"><tr id="EN-US_TOPIC_0018073215__row1241375075017"><th align="left" class="cellrowborder" valign="top" width="18.6%" id="mcps1.3.1.2.2.2.2.5.1.1"><p id="EN-US_TOPIC_0018073215__p441365017507">ECS Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="16.07%" id="mcps1.3.1.2.2.2.2.5.1.2"><p id="EN-US_TOPIC_0018073215__p184133502504">Maximum VBD Disks</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="16.41%" id="mcps1.3.1.2.2.2.2.5.1.3"><p id="EN-US_TOPIC_0018073215__p13413150115018">Maximum SCSI Disks</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="48.92%" id="mcps1.3.1.2.2.2.2.5.1.4"><p id="EN-US_TOPIC_0018073215__p1241365025014">Constraint</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0018073215__row8413205005018"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.2.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p9413155019501">KVM</p>
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<p id="EN-US_TOPIC_0018073215__p341385065013">(excluding D2 ECSs)</p>
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</td>
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<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p54131750145013">24</p>
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</td>
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<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.2.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p18413105011504">59</p>
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</td>
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<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.2.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p2413115045016">VBD disks + SCSI disks ≤ 60 (This constraint does not apply to local disks.)</p>
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<p id="EN-US_TOPIC_0018073215__p341335020502">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text20105752144010">ECS</span> flavor.</p>
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</td>
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</tr>
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<tr id="EN-US_TOPIC_0018073215__row17413145010507"><td class="cellrowborder" valign="top" width="18.6%" headers="mcps1.3.1.2.2.2.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p3413050125016">D2</p>
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</td>
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<td class="cellrowborder" valign="top" width="16.07%" headers="mcps1.3.1.2.2.2.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p13413150165016">24</p>
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</td>
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<td class="cellrowborder" valign="top" width="16.41%" headers="mcps1.3.1.2.2.2.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p141345010506">30</p>
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</td>
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<td class="cellrowborder" valign="top" width="48.92%" headers="mcps1.3.1.2.2.2.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p64135501508">VBD disks + SCSI disks ≤ 54 (This constraint does not apply to local disks.)</p>
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<p id="EN-US_TOPIC_0018073215__p17413550145015">The number of local disks is determined based on the <span id="EN-US_TOPIC_0018073215__text910565217407">ECS</span> flavor.</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="note" id="EN-US_TOPIC_0018073215__note1026516599323"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><ul id="EN-US_TOPIC_0018073215__ul1126555913329"><li id="EN-US_TOPIC_0018073215__li1326513595327">The system disk of an <span id="EN-US_TOPIC_0018073215__text088771513210">ECS</span> is of VBD type. The maximum number of SCSI disks is 59.</li><li id="EN-US_TOPIC_0018073215__li1726535953213">For a D-series KVM <span id="EN-US_TOPIC_0018073215__text262915485210">ECS</span>, its local disks use two SCSI controllers, indicating that 30 SCSI drive letters are used. A maximum of 30 SCSI disks can be attached to such an <span id="EN-US_TOPIC_0018073215__text6137154815318">ECS</span>.</li></ul>
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</div></div>
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</li></ul>
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</div>
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<div class="p" id="EN-US_TOPIC_0018073215__p1115062685714">The maximum number of disks that you can attach to an <span id="EN-US_TOPIC_0018073215__text192646354552">ECS</span> that was created before the disk function upgrade remains unchanged, as shown in <a href="#EN-US_TOPIC_0018073215__table3150162605720">Table 2</a>.
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<div class="tablenoborder"><a name="EN-US_TOPIC_0018073215__table3150162605720"></a><a name="table3150162605720"></a><table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0018073215__table3150162605720" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Numbers of disks that can be attached to an existing <span id="EN-US_TOPIC_0018073215__text273917390551">ECS</span></caption><thead align="left"><tr id="EN-US_TOPIC_0018073215__row121508269574"><th align="left" class="cellrowborder" valign="top" width="16.869999999999997%" id="mcps1.3.2.3.2.5.1.1"><p id="EN-US_TOPIC_0018073215__p18150112615579">Maximum VBD Disks</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="15.659999999999998%" id="mcps1.3.2.3.2.5.1.2"><p id="EN-US_TOPIC_0018073215__p6151326195710">Maximum SCSI Disks</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="18.07%" id="mcps1.3.2.3.2.5.1.3"><p id="EN-US_TOPIC_0018073215__p171511926165716">Maximum Local Disks</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="49.4%" id="mcps1.3.2.3.2.5.1.4"><p id="EN-US_TOPIC_0018073215__p515172617572">Constraint</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="EN-US_TOPIC_0018073215__row191511826175718"><td class="cellrowborder" valign="top" width="16.869999999999997%" headers="mcps1.3.2.3.2.5.1.1 "><p id="EN-US_TOPIC_0018073215__p181515261578">24</p>
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</td>
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<td class="cellrowborder" valign="top" width="15.659999999999998%" headers="mcps1.3.2.3.2.5.1.2 "><p id="EN-US_TOPIC_0018073215__p515172615710">23</p>
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</td>
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<td class="cellrowborder" valign="top" width="18.07%" headers="mcps1.3.2.3.2.5.1.3 "><p id="EN-US_TOPIC_0018073215__p8151526115713">59</p>
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</td>
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<td class="cellrowborder" valign="top" width="49.4%" headers="mcps1.3.2.3.2.5.1.4 "><p id="EN-US_TOPIC_0018073215__p215111267575">VBD disks + SCSI disks ≤ 24</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>
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<p id="EN-US_TOPIC_0018073215__p1797011610577"></p>
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<div class="section" id="EN-US_TOPIC_0018073215__section137641439201"><h4 class="sectiontitle">How Can I Check Whether an ECS Is Created Before or After the Disk Function Upgrade?</h4><ol id="EN-US_TOPIC_0018073215__ol720815237241"><li id="EN-US_TOPIC_0018073215__li520816235246">Log in to management console.</li><li id="EN-US_TOPIC_0018073215__li189127324246">Under <strong id="EN-US_TOPIC_0018073215__b1157791515457"><span id="EN-US_TOPIC_0018073215__text8577111514456">Computing</span></strong>, click <strong id="EN-US_TOPIC_0018073215__b557815156452">Elastic Cloud Server</strong>.</li><li id="EN-US_TOPIC_0018073215__li14150114982419">Click the name of the target <span id="EN-US_TOPIC_0018073215__text1821417259274">ECS</span>. The page providing details about the <span id="EN-US_TOPIC_0018073215__text562514571372">ECS</span> is displayed.</li><li id="EN-US_TOPIC_0018073215__li0307118152514">Click the <strong id="EN-US_TOPIC_0018073215__b11312514144050">Disks</strong> tab.</li><li id="EN-US_TOPIC_0018073215__li145661876384">Check the number of disks that can be attached to the <span id="EN-US_TOPIC_0018073215__text17501263276">ECS</span> to determine the total number of disks.<ul id="EN-US_TOPIC_0018073215__ul11314425184015"><li id="EN-US_TOPIC_0018073215__li103149253409">If the total number of disks that can be attached is 24 (including the system disk), the <span id="EN-US_TOPIC_0018073215__text89213301819">ECS</span> is created before the disk function upgrade. </li><li id="EN-US_TOPIC_0018073215__li031442511405">If the total number of disks that can be attached is 60 (including the system disk), the <span id="EN-US_TOPIC_0018073215__text6162134012820">ECS</span> is created after the disk function upgrade.</li></ul>
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</li></ol>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0018124786.html">Disk Partition, Attachment, and Expansion FAQ</a></div>
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</div>
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</div>
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