<p class="shortdesc">当您之前在某一时刻创建了一个快照，您可以使用回滚云硬盘将云盘数据恢复为快照内容。</p> <section class="section prereq" id="Roll_Back__prereq_u5j_tm3_rvb"><div class="tasklabel"><h2 class="doc-tairway">前提条件</h2></div> <ol class="ol" id="Roll_Back__ol_tr5_tm3_rvb"> <li class="li">云硬盘有创建的快照，手动快照和自动快照都可以。</li> <li class="li">云硬盘没有正在创建中的快照。</li> <li class="li">ECS实例为关机状态，云硬盘未被释放。</li> </ol> </section> <section class="section attention" id="Roll_Back__ljt_xl3_rvb"><div class="tasklabel"><h2 class="doc-tairway">注意事项</h2></div> <ol class="ol" id="Roll_Back__ol_fgh_sm3_rvb"> <li class="li">回滚磁盘操作不可逆，回滚完成后，原有数据无法恢复。</li> <li class="li">回滚磁盘将导致从快照的创建时间点到回滚磁盘时这段时间内产生的数据丢失，请谨慎操作。</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">镜像与快照 </span><abbr> > </abbr><span class="ph uicontrol">快照</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，在目标云硬盘操作列单击<span class="ph uicontrol">回滚磁盘</span>。</span> </li><li class="li step stepexpand"> <span class="ph cmd">弹出<span class="ph uicontrol">回滚磁盘</span>对话框，确认回滚信息是否正确。</span> </li><li class="li step stepexpand"> <span class="ph cmd">单击<span class="ph uicontrol">确认</span>，快照状态变为<span class="ph uicontrol">还原中</span>。</span> <div class="itemgroup info"> <div class="note note note_note" id="Roll_Back__note_tt3_1n3_rvb"><span class="note__title">说明：</span> <ul class="ul" id="Roll_Back__ul_rvb_bn3_rvb"> <li class="li">不管是回滚系统盘还是数据盘，ECS实例必须为关机状态。</li> <li class="li">实例如果挂载了数据盘，回滚完成后，数据盘仍然为挂载状态。</li> </ul> </div> </div> </li></ol></section> <section class="section result" id="Roll_Back__result_dlk_bn3_rvb"><div class="tasklabel"><h2 class="doc-tairway">执行结果</h2></div> <p class="p">快照页面提示<span class="ph uicontrol">操作成功</span>，目标快照状态为<span class="ph uicontrol">还原中</span>，大概3-5分钟后，状态变为<span class="ph uicontrol">可用</span>，表示还原完成。</p> </section>