We have a three node AG. Two nodes in a local data center, one in a different subnet DR site. Am I correct that the Cluster Name should have two IPs, just like the listener?
Also, is there a way to set the preferred owners of the Cluster Name and Witness so it won't try to fail over to the DR site if the primary nodes are up?
Additional Info: We had an outage from patching a secondary node, we couldn't figure out why a secondary rebooting caused the AG & Cluster to go down. We opened a support ticket with Microsoft and they recommended we change the possible owners of the Cluster Group to exclude DR. So what appears to have happened is the Cluster Group tried to fail over to the DR site, it couldn't come online because there was no subnet IP. That took just long enough that quorum was lost because the witness didn't come online, and the secondary was rebooting.