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版本2015-07-08Version 2015-07-08

版本2015-07-08 为页 blob 添加了增量快照支持。Version 2015-07-08 adds support for incremental snapshots for page blobs. 如果要实现自己的备份解决方案,增量快照是一种用于备份虚拟机磁盘的经济高效的方法。Incremental snapshots are a cost-effective way to back up virtual machine disks if you wish to implement your own backup solution.

若要支持增量快照," 获取页范围 " 操作现在 prevsnapshot 会公开参数,该参数采用 DateTime 指示现有快照的值。To support incremental snapshots, the Get Page Ranges operation now exposes the prevsnapshot parameter, which takes a DateTime value indicating an existing snapshot. 使用参数调用 获取页范围prevsnapshot 返回自指定的快照创建以来已更新或已清除的页 prevsnapshotCalling Get Page Ranges with the prevsnapshot parameter returns pages that have been updated or cleared since the snapshot specified by prevsnapshot was taken. 然后,可以使用 " Put" 页将返回的页面复制到其他存储帐户中的备份页 blob。You can then copy the pages that are returned to a backup page blob in another storage account, using Put Page.