Problem: Failing node. Failover Cluster Manager gave the following message:
The cluster network name is not online.
Location: HKEY Local Machine\Cluster\Networks\NIC GUID\Role
1. Do not allow cluster network communications on this network
2. Allow cluster network communications on this network
3. Allow clients to connect through this network
The role must be set to "3" to allow the node to participate with cluster. Once the role is properly set the node will become online and work with the cluster.
This is widely reported issue with the Microsoft Failover Cluster services and Microsoft Exchange Server 2010 Database Availability Group (DAG) node.
P.S. This post has been surprisingly popular. Please leave comments if this helps. Thanks! -SMJ
Full Technet URL for this issue can be found at: http://blogs.technet.com/b/timmcmic/archive/2010/05/12/cluster-core-resources-fail-to-come-online-on-some-exchange-2010-database-availability-group-dag-nodes.aspx
Last updated August 29th, 2012 by Steven Jordan