这样您就不必自己重新构建逻辑卷和文件系统，否则需要像以前一样进行传统的恢复或复制操作。
This saves you rebuilding the logical volumes and file systems yourself, as you would need to do before running a traditional restore or copy operation.
在调用ADMIN_COPY_SCHEMA之后必须进行备份，否则在恢复以后复制的表将不可访问。
A backup must be taken after calling the ADMIN_COPY_SCHEMA, otherwise the copied tables will be inaccessible following recovery.
当使用灾难恢复复制时，会有大量的变化数据流量涌入广域网(WANs)。
They flood wide area networks (WANs) with changed data traffic when disaster recovery replication is used.
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