A split mirror initialized as mirror can be used as a system level backup, allowing the administrator to perform a quick file system level recovery of the database.
初始化为镜像的分割镜像可以用作系统级备份，从而使管理员可以执行快速的文件系统级数据库恢复。
Metro Mirror is used to replicate to the first backup, and then Global Mirror is used to replicate from the first backup to a second backup.
Metro Mirror用于对数据进行第一次备份，再由Global Mirror复制第一次备份作为第二次备份。
The backup on the split mirror system will be capturing the state of the database containers on the source system at the time that the split occurred.
当发生分割时，分割镜像系统上的备份将捕捉源系统上的数据库容器的状态。
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