So we have a 2-node 2008R2 cluster that has SQL 2012 AlwaysOn AG running on top of it. I need to take the heartbeat network offline for 5 minutes to change it to a new heartbeat network. The current heartbeat network has no route to it.
I am concerned about the cluster problems when I make this change. I know I can change the AlwaysOn properties to manual to avoid accidental failovers. Is there anything else I should do from the cluster level to change my heartbeat network to
something new? I basically was just planning to Re-IP the same nics, but am mostly concerned about cluster issues from taking the heartbeat network offline.
Dave