Just make sure the lag time between the master host failing and the slave host taking over is minimal.
要确保主服务器发生故障和辅助服务器实施接管之间的延迟时间最小。
2
This means that the slave server has to then copy over the entire index.
这就意味者从服务器必须要复制整个索引。
3
To explain the form of a whole building through its relationship with a finial detail of another seems over-inflated, and it's an odd tribute to a slave-owner.