LCR provides log shipping, log replay, and a quick manual switch to a secondary copy of the data.

LCR提供日志传送、日志重播以及到数据的辅助副本的快速手动切换。

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Otherwise, you need to have a secondary copy placed on the hard drive, in order to remove this restriction and return its status to normal.

否则，你需要有一个辅助副本放在硬盘上，为了消除这种限制并返回其状态正常。

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Secondary DNS servers transfer their zone information directly from the primary DNS server and keep a copy locally.

辅助DNS服务器直接从主d NS服务器传输其区域信息，并在本地保留副本。

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