At least a few times a day, my main production server has recently begun failing over. Only, the quorum doesn't move to the other node.
I ran the validation report, and got a lot of info I don't understand. It is an HP ProLiant BL680c G5. Some of the info in the report that I'm wondering about:
Degraded: HpCISSs HP MPIO DSM for EVA4x00/6x00/8x00 family of Disk Arrays Link-Layer Topology Discovery Mapper I/O Driver Mount Point Manager
Those are just a few. I'm not so worried about "errors", but "degraded" seems to imply that it should be running but isn't doing so well.
System details: sql - 10.50.4000.0 Windows - Windows NT - 64 Bit
It really is going to be awful if it IS an MPIO issue. That has happened many times, and the DBA team has been accused of modifying the settings! I'm the team lead, and even I have no idea what half of this means (I know what MPIO is, and I recognize all the SAN stuff, but troubleshooting? Nah.)
Interesting new information - right before this began happening, we updated the Firewall Service Module, and rebooted the core switches.
I'm thinking there are settings which don't have the correct defaults?
The adding/removing didn't work. It failed over yesterday evening.