Постоянно сыпется в лог (messages):
Jul 6 23:39:09 big kernel: ata3: SATA link down (SStatus 1 SControl 310)
Jul 6 23:39:09 big kernel: ata3: EH complete
Jul 6 23:39:25 big kernel: ata3: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xa frozen
Jul 6 23:39:25 big kernel: ata3: SError: { PHYRdyChg CommWake }
Jul 6 23:39:25 big kernel: ata3: hard resetting link
Jul 6 23:39:28 big kernel: ata3: SATA link down (SStatus 1 SControl 310)
Jul 6 23:39:28 big kernel: ata3: EH complete
Jul 6 23:39:35 big kernel: ata3: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xa frozen
Jul 6 23:39:35 big kernel: ata3: SError: { PHYRdyChg CommWake }
Jul 6 23:39:35 big kernel: ata3: hard resetting link