This second option for a 2+1 operation mode involves configuring the Enterprise Vault virtual servers EVSERVER1 and EVSERVER2 to run on any of the three nodes. This has the advantage that, for example, if NODEA fails and EVSERVER1 fails over to NODEC, you can bring NODEA back online to act as the failover node for EVSERVER1 and EVSERVER2.
You can extend the setup process for an N+M configuration with any number of primary and failover nodes, up to the total of 8 clustered nodes supported by Microsoft server clusters.
To cluster Enterprise Vault in a 2+1 "any-to-any" configuration
Follow steps 2 to 5 of the 2+1 configuration without "any-to-any" support.
Test the cluster to confirm that if an active node fails, the virtual server fails over to the appropriate node.
For example, if you have configured the preferred owners of the resource groups as suggested in step 1:
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