SCSI errors - lze otestovat SCSI radic?

[Jaroslav Stefka]

Dobry den,
z hardwarovych duvodu (asi) mi pada linux aspon jednou denne.
Ve /var/log/messages se objevuji tyto chyby:

 17:33:31 linux kernel: (scsi0:0:0:0) Performing Domain validation.
 17:33:34 linux kernel: (scsi0:0:0:0) Successfully completed Domain validation.
 17:33:34 linux kernel: (scsi0:0:0:0) Synchronous at 80.0 Mbyte/sec, offset 31.
 17:33:34 linux kernel: (scsi0:0:0:0) Performing Domain validation.
 17:33:34 linux kernel: (scsi0:0:0:0) Successfully completed Domain validation.
 17:46:54 linux kernel: (scsi0:0:0:-1) Unexpected busfree, LASTPHASE = 0x40, SEQ
 17:46:58 linux kernel: (scsi0:0:0:0) Parity error during Command phase.
 17:47:09 linux kernel: scsi : aborting command due to timeout : pid 113651, scs
 17:47:13 linux kernel: scsi : aborting command due to timeout : pid 113650, scs
 17:47:14 linux kernel: SCSI host 0 abort (pid 113650) timed out - resetting
 17:47:14 linux kernel: SCSI bus is being reset for host 0 channel 0.

Pak system totalne vytuhne a pomuze jenom tvrdy reset.
(System bezel az do soucasnosti ve stejne konfiguraci cca 2 roky bez problemu).
Odchazi SCSI radic? 
Da se nejak SCSI radic otestovat?

Konfigurace: 
RH6.0, Adaptec AHA-2940 Ultra2 SCSI host adapter, disk IBM  Model: DNES-309170W

Diky.

J. Stefka