<p class="shortdesc">本文介绍如何通过已有快照创建一块云硬盘，创建好的云硬盘里面包含快照里面的数据。</p> <section class="section prereq" id="Create_Disk__prereq_fx5_rdz_svb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <p class="p">您已成功创建可用的快照，可参考<a class="xref" href="/ssr/help/compute/ecs/manual.Snapshot_Manage.Manage_Snapshots.Create_Snapshot" target="_blank" rel="external noopener">创建快照</a>。</p> </section> <section class="section limitation" id="Create_Disk__fls_5l3_rvb"><div class="tasklabel"><h2 class="doc-tairway">使用限制</h2></div> <ol class="ol" id="Create_Disk__ol_x5h_qdz_svb"> <li class="li">通过快照方式创建的云硬盘，只能采用按量计费的方式计费。</li> <li class="li">因为单独创建的云硬盘采用按量计费方式，账户余额不得少于200元或者等值的代金券。</li> <li class="li">用快照创建磁盘功能不支持更换云硬盘类型和容量大小。例如，使用的快照是20G的容量型云硬盘，那么使用该快照创建的云硬盘也必须是容量型云硬盘，大小为20G。</li> <li class="li">用快照创建磁盘功能一次最多创建1块数据盘。</li> <li class="li">云硬盘只能挂载到同一可用区的ECS实例内，创建后不支持更换可用区，请谨慎选择。</li> </ol> </section> <section><div class="tasklabel"><h2 class="doc-tairway">操作步骤</h2></div><ol class="ol steps"><li class="li step stepexpand"> <span class="ph cmd">登录<a class="xref" href="https://www.ocftcloud.com/console/ecs/overview" target="_blank" rel="external noopener">云服务器ECS控制台</a>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击左侧导航栏<span class="ph menucascade"><span class="ph uicontrol">存储</span><abbr> > </abbr><span class="ph uicontrol">云硬盘</span></span>，进入<span class="ph uicontrol">磁盘管理</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">选择目标地域和可用区，单击右上角<span class="ph uicontrol">创建</span>，进入<span class="ph uicontrol">创建云硬盘</span>页面。</span> <div class="itemgroup info"> <div class="note note note_note" id="Create_Disk__note_z2x_ydz_svb"><span class="note__title">说明：</span> 云硬盘只能挂载到同一可用区的ECS实例内，创建后不支持更换可用区，请谨慎选择。</div> </div> </li><li class="li step stepexpand"> <span class="ph cmd">在云硬盘后单击<span class="ph uicontrol">用快照创建磁盘</span>，进入<span class="ph uicontrol">选择快照</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">勾选目标快照，单击<span class="ph uicontrol">确认</span>。</span> <div class="itemgroup info"> <div class="note note note_note" id="Create_Disk__note_wbq_c2z_svb"><span class="note__title">说明：</span> 用<span class="ph uicontrol">快照创建磁盘</span>功能一次最多创建1块数据盘。</div> </div> </li><li class="li step stepexpand"> <span class="ph cmd">单击<strong class="ph b">选择ECS实例</strong>，进入<strong class="ph b">选择ECS实例</strong>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">勾选目标ECS实例，单击<strong class="ph b">确认</strong>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">输入描述。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击<span class="ph uicontrol">购买</span>，进入<span class="ph uicontrol">订单确认</span>页面。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击<span class="ph uicontrol">确认开通</span>，进入<span class="ph uicontrol">支付结果</span>页面。</span> <div class="itemgroup info"> <div class="note note note_note" id="Create_Disk__note_fwg_qgz_svb"><span class="note__title">说明：</span> 创建云硬盘大概需要2-3分钟，创建完成后云硬盘状态为<span class="ph uicontrol">使用中</span>，表示创建完成。</div> </div> </li></ol></section>