I have a Dell PV220S, populated with (14) 72GB drives, running a split conroller setup off two channels of a Perc 4DC controller. It is configured as a RAID-5 with two of the 14 drives (one on each channel) setup as a hot spare.
Today, suddenly I found data missing from this volume. Upon closer inspection, yellow lights were flashing on drives 0,1,2,3,4 and 8. Dell OMSA reports that on that channel (channel 0) that drives 0,1,2,3,4 and 8 (physical drive 8 is the hotspare) have failed.
I have powered everything down, checked my cables, connectors and power and everything seems OK. Drives spinup just fine, but error out when reading the RAID configuration.
I would think is highly unlikely to have six drives fail at the same time (no errors were reported in event logs last night, or this morning).
I would suspect perhaps the conroller or something in the PowerVault, but it still shows that one of the drives on that channel (physical drive 5) is still working just fine.