Hi,
I am running OMV as a VM in an ESX Host.
I have two raid 1's, and the OS is on its own drive.
It looks like one of the RAID's ran out of room, and the VM wouldn't start, so I cleared the snapshots in VSphere, and now OMV starts, but one of the RAIDs, likely the one that was full is appearing as missing.
See attached screenshots for output for "Degraded or missing raid array questions"