To mitigate that, Yahoo replicates data to multiple clusters, so an outage of one distributed file system can be compensated for by using a backup file system.
为了减轻该风险，雅虎将数据复制到多个群集，因此分布式文件系统的中断可以使用备份文件系统来弥补和解决。
The primary system performs all transactional work and replicates any database changes to the standby.
主系统执行所有事务性工作，并将任何数据库更改复制到备用系统。
After the log records pertaining to older schema no longer exist in the system, the shadow replicate is automatically deleted and system only has new master replicates.
当系统中不再存在属于旧模式的日志记录时，影子复制将被自动删除，系统中就只有新的主复制。
The basic method by which HADR replicates data is to send DB2 log writes simultaneously to the local disk and to the standby system.
HADR复制数据的基本方法是将DB 2日志写同时发送到本地磁盘和备用系统。
The basic method by which HADR replicates data is to send DB2 log writes simultaneously to the local disk and to the standby system.
HADR复制数据的基本方法是将DB 2日志写同时发送到本地磁盘和备用系统。
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