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。
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.
根据IBM Support所说，这个问题很少见，只能执行mksysb把数据备份到好的磁盘上并恢复系统，没有其他选择。
According to IBM Support, this is an infrequently encountered problem but one where there is no other choice but to lay a mksysb onto a good disk and recover the box that way.
数据库备份可以通过使用系统过程在线执行，也可以使用操作系统复制命令离线执行。恢复操作是通过连接ur l属性提供的。
Database backups can be performed online using system procedures, or offline using operating system copy commands.
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