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You can use the Application Manager to configure protection for an Exchange cluster with a like-named (also known as a standby) cluster. These instructions also apply to setting up multiple EVS (Exchange virtual server).
When you protect a cluster with a like-named cluster, the Application Manager moves the EVS location from the source cluster to the target cluster. By moving the EVS, the process of moving users and public folders from one server to another is not needed because they will continue to use the same mail store on the target as they were on the source. This, coupled with the ability to reduce the TTL (Time to Live) value of the EVS DNS record (optional), allows a more seamless failover.
Next step: Verify that your cluster environment meets requirements