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Like-named cluster prerequisites

Before you can use the Application Manager to protect a cluster with a like-named cluster, you must complete the following:

Each target server node must have the same version and service pack level of Exchange as is installed on the source nodes.
The target must have a resource group that has the same name as the resource group on the source.
The target resource group only needs to contain physical disk resources, which MUST use the same drive letters that are used by the physical disk resources on the source.

In a like-named environment, the Application Manager creates temporary name and IP address resources on the target cluster for mirroring and replication. A DNS entry is created based on the target owning node’s DNS server. If the source and target owning nodes are configured to use different DNS servers, this can cause issues when enabling protection. If you have issues enabling protection in this configuration, verify that the source owning node’s DNS server is correctly set up to receive DNS zone updates from the target owning node’s DNS server, or reload the forward and reverse zones using the dnsmgmt utility

Note:

Like-named cluster support is only available for clusters running Exchange 2003. It is not available for Exchange 2007.

Next step: Assign permissions for your cluster