We have a 2node,disk majority, failover on windows 2008R2 failover cluster.
Recently, we had a DataCenter shutdown and our Active node was shutdown and did, in fact, failover to the inactive node. After the active node shutdown, 5 minutes later the other node (now the active node) also shutdown. About 3 hrs later,the nodes were powered up. I checked the new active node and all services and resources still existed in the new active node. Then, the other node was powered up.
Later, we checked both nodes and we discovered the Active node no longer had resources and services. They had returned to the original node making it again active. What could cause this?
Also, is there a log that captures or provides information for when a failover cluster fails over. It may tell me what happened