These servers were all on a large disk RAID10 array, last night it went degraded with one drive fault, and we swapped that drive. Upon swapping two others immediately went 'missing' in the RAID10 array. We decided to away the one put in rebuilt, which completed somewhere around midnight, and then to work on exporting the servers to another disk array for very quick re-import if any trouble. Well we had trouble before then and another disk dropped and the RAID entered a fault state. We have backups of all the servers and may have to move toward restoring, we are trying to do anything possible to get the RAID back now but will soon move into restoring if that fails.