最大的变化是灾难恢复服务器的网络标识。
The biggest change is the network identity of the disaster recovery server.
如果其他站点或服务器也必须把您的灾难恢复服务器输入它们的安全设置，有DNS记录会有帮助。
Having a DNS record can help when other sites or servers must also enter your disaster recovery server into their security Settings.
如果两台服务器都发生了故障，就使用到第三个灾难恢复服务器集的副本将应用程序引导至复制节点。
If both servers fail, the applications are directed to the replica nodes using replication to a third disaster recovery server set.
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