In contrast to er, in a cluster, you cannot control the granularity of data replication; the entire server's data is always replicated.
与ER形成对比的是，在一个集群中，无法控制数据复制的粒度；而是始终复制整个服务器的数据。
Until the mid nineties, in the context of data replication, achieving distribution transparency and data consistency has often been the priority.
直到90年代中期，当谈到数据复制的时候，分布的透明性和数据的一致性常常都是重要的工作目标。
Replica creation strategy is one of the most important issues in research of data replication.
副本创建策略是数据副本研究中的重要问题之一。
This paper discusses the key concepts of data replication disaster recovery, synchronous and asynchronous , and makes an analysis on them.
数据容灾，是指建立一个异地的数据系统复制本地数据，可采用同步或异步复制技术。本文就此进行分析。
This paper discusses the key concepts of data replication disaster recovery, synchronous and asynchronous , and makes an analysis on them.
数据容灾，是指建立一个异地的数据系统复制本地数据，可采用同步或异步复制技术。本文就此进行分析。
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