[Hardware] проблемма с винчестерами?

[Serge]

Система Server 4.0 + updates 
2 винчестера
  Vendor: ATA       Model: WDC WD2500AAJS-0  Rev: 01.0
  Vendor: ATA       Model: WDC WD2500JS-19N  Rev: 10.0
объеденены в RAID1 + LVM.

В логах kernel/errors наблюдаю такие ошибки.
насколько это серьезно и что посоветуете предпринять?
ядро 2.6.18-ovz-smp-alt24
и поднят 
smartmontools-5.36-alt3

Jul 17 16:13:16 ns kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 
action 0x2 frozen
Jul 17 16:13:17 ns kernel: ata2.00: tag 0 cmd 0xb0 Emask 0x2 stat 0x50 err 0x0 
(HSM violation)
Jul 17 16:13:17 ns kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 
action 0x2 frozen
Jul 17 16:13:17 ns kernel: ata2.00: tag 0 cmd 0xb0 Emask 0x2 stat 0x50 err 0x0 
(HSM violation)
Jul 17 16:13:17 ns kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 
action 0x2 frozen
Jul 17 16:13:17 ns kernel: ata2.00: tag 0 cmd 0xb0 Emask 0x2 stat 0x50 err 0x0 
(HSM violation)
Jul 17 16:13:18 ns kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 
action 0x2 frozen
Jul 17 16:13:18 ns kernel: ata2.00: tag 0 cmd 0xb0 Emask 0x2 stat 0x50 err 0x0 
(HSM violation)
Jul 17 16:13:18 ns kernel: ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 
action 0x2 frozen
Jul 17 16:13:18 ns kernel: ata2.00: tag 0 cmd 0xb0 Emask 0x2 stat 0x50 err 0x0 
(HSM violation)