We have a two-node cluster set up running SQL Server 2012 on Windows Server 2012 R2. The base cluster consists of only those two nodes. The quorum is set up as node + disk majority, with a shared disk sitting on an EqualLogic array connecting via iSCSI. Cluster configuration validates with no errors.
Earlier today, the two Availability Groups running on the cluster (both primary on Node #1) went into a resolving state on both nodes. Looking at the cluster events, there is nothing until it tries to restart the service. Everything underneath the Windows Failover cluster shows green (online and no warnings) - disks, network interfaces, nodes, etc.
Looking at the application log in Windows Event Viewer, the event showing that the Availability Groups are entering the Resolving state have been requested to do so by the cluster because a quorum could not be established. I cannot find anything else in any logs to support this, and the quorum passes during cluster validation.
Where should we be looking next, and what should we be looking for?
Thanks, Mike
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