<p class="shortdesc"></p> <table class="table" id="development__table_khn_frj_ypb"><caption></caption><colgroup><col><col></colgroup><thead class="thead"> <tr class="row"> <th class="entry" id="development__table_khn_frj_ypb__entry__1">名称</th> <th class="entry" id="development__table_khn_frj_ypb__entry__2">含义</th> </tr> </thead><tbody class="tbody"> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">备份策略</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">备份策略是根据业务需求，由用户自定义的执行备份的方案，所有需要备份的文件都必须通过某个备份策略执行备份操作。</p> </td> </tr> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">全量备份</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">基于某一时间对所有数据的完全拷贝。</p> </td> </tr> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">增量备份</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">每次只对相对于上一次备份后增加和修改后的数据进行备份。相对于全量备份，增量备份即节省存储空间，又缩短了备份时间。</p> </td> </tr> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">永久增量备份</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">只在初次备份使用全量备份，后续备份均使用增量备份的方式。</p> </td> </tr> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">备份客户端</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">安装在云主机上对目录/文件进行备份的软件。</p> </td> </tr> <tr class="row"> <td class="entry" headers="development__table_khn_frj_ypb__entry__1 "> <p class="p">备份库</p> </td> <td class="entry" headers="development__table_khn_frj_ypb__entry__2 "> <p class="p">用来存放备份数据的存储空间。</p> </td> </tr> </tbody></table>