» Отваливается винт в RAID-5

Сервак HP Proliant DL320. Контроллер HP Smart Array P410. Диски Sata 500Gb.
Постоянно отваливается винт. В логах наблюдаю:
Nov 9 13:16:02 bill kernel: ciss0: *** Hot-plug drive removed, Port=2I Box=1 Bay=3 SN=WMASY8120961
Nov 9 13:16:02 bill kernel: ciss0: *** Physical drive failure, Port=2I Box=1 Bay=3
Nov 9 13:16:06 bill kernel: ciss0: *** State change, logical drive 0, new state=REGENING
Nov 9 13:16:06 bill kernel: ciss0: logical drive 0 (da0) changed status OK->interim recovery, spare status 0x0
Nov 9 13:17:14 bill kernel: ciss0: *** Hot-plug drive inserted, Port=2I Box=1 Bay=3 SN=WMASY8120961
Nov 9 13:17:14 bill kernel: ciss0: *** State change, logical drive 0, new state=NEEDS_REBUILD
Nov 9 13:17:14 bill kernel: ciss0: logical drive 0 (da0) changed status interim recovery->ready for recovery, spare status 0x0
Nov 9 13:17:14 bill kernel: ciss0: *** State change, logical drive 0, new state=REBUILDING
Nov 9 13:17:14 bill kernel: ciss0: logical drive 0 (da0) changed status ready for recovery->recovering, spare status 0x0
Nov 9 15:23:02 bill kernel: ciss0: *** State change, logical drive 0, new state=OK
Nov 9 15:23:02 bill kernel: ciss0: logical drive 0 (da0) changed status recovering->OK, spare status 0x0

И такая петрушка три-четыре раза в неделю. Куда копать? Правильно ли я понимаю что умирает винт?