Hello!
Normally it should be a simple thing to restart a server when it´s part of a cluster. But last time it went very wrong and it took us 90 minutes to get SAP running again.
What we have:
Windows 2003 Cluster:
Node1 holding SAP application
Node2 holding the database
What we did:
moving SAP application from Node1 to Node2
shutting down SAP instances on Node1
restarting Node1
What happened:
Node1 not responding
Cluster group was malfunctioning
group SAP PRD not found
We had to shutdown both servers to initialize both Nodes and get the cluster running again. Today we have to do the same again, but this time please without any problems 
Did do we something wrong? Do we have to shutdown the SAP instances from Node1 (they were already running on Node2 the last time).
Thanks for any input