HP ML350 G5 RAID failure
It is not unusual for an old HP Smart Array E200i RAID controller to “forget” it’s configuration and convert an array from level-5 to level-1 with disastrous results. Thankfully, our emergency team was able to restore a valid backup and replace the faulty disks. The server was again up and running with minimal down-time.
I don’t need to mention that a server replacement is needed immediately!