Administration Guide for Exchange Server 2003 > Managing Exchange Clusters in Exchange Server 2003

Reviewing Exchange Clusters

Exchange clusters are made up of physical computers (nodes) and logical Exchange Virtual Servers. Exchange Virtual Servers are Microsoft Windows® cluster groups with Exchange resources (instances of Exchange services). Exchange Virtual Servers are the basic units of failover for your cluster.


Sample Exchange 2003 cluster with four physical nodes and three logical Exchange Virtual Servers



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