应选择防止复制向备用表应用存储冲突的数据的选项，防止新数据(假设新数据更好)被旧数据覆盖。
Choosing the option that prevents replication from applying the conflicted data to the standby table, prevents newer data (assumed to be better) from being overwritten by older data.
默认的复制方法(也有其他可用的方法)只要求在将确认通知返回给主系统之前，备用系统的内存中收到一个日志写。
The default replication method (others are available) only requires that a log write be received in memory at the standby before acknowledgement is returned to the primary.
右边的服务器(备用服务器)称为“备用”集群成员，因为它的唯一负载就是集群复制。
The one on the right (standby server) is called a "standby" member because the only load on it is cluster replication.
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