How to Verify that the Cluster Service is Running on Each Node
This topic explains how to confirm that the Cluster service is running on each node.
Procedure
To verify that the Cluster service is running on each node
Log on to any node in your Exchange 2003 cluster.
In Cluster Administrator, in the console tree, select the cluster name under the root container.
In the details pane, under State, ensure that all of your cluster nodes are Online.