电视机、计算机、空调等不要24小时在备用状态因为一样耗电的。
Don't let the TV, computer, A/C switch on at the stand-by mood 24 hours which is still has power consumption.
无状态的故障恢复是最简单的方法，但也是作用最有限的方法，因为该方法在故障服务器与备用服务器之间没有维护任何状态。
Stateless failover is the simplest approach but also the least useful approach given that the approach maintains no state between the failed server and the backup server.
在备用计算机和主要计算机上的数据库成功启动后，您需要确保两个数据库处于同步状态。
After the databases on the standby and primary machines are started successfully, you need to ensure that both databases are in sync.
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