Unlike a stand-alone (non-clustered) Exchange 2003 server, an EVS is a cluster group that can be failed over if the primary server running the EVS fails.

• 与独立的(非群集的)Exchange 2003服务器不同,EVS是一个群集组,当运行EVS的主服务器发生故障时,可以对该群集组进行故障转移。