Cache device dropped offline:
Nov 19 13:20:07 Tower kernel: ata1: link is slow to respond, please be patient (ready=0)
Nov 19 13:20:11 Tower kernel: ata1: COMRESET failed (errno=-16)
Nov 19 13:20:17 Tower kernel: ata1: link is slow to respond, please be patient (ready=0)
Nov 19 13:20:21 Tower kernel: ata1: COMRESET failed (errno=-16)
Nov 19 13:20:27 Tower kernel: ata1: link is slow to respond, please be patient (ready=0)
Nov 19 13:20:56 Tower kernel: ata1: COMRESET failed (errno=-16)
Nov 19 13:20:56 Tower kernel: ata1: limiting SATA link speed to 3.0 Gbps
Nov 19 13:21:01 Tower kernel: ata1: COMRESET failed (errno=-16)
Nov 19 13:21:01 Tower kernel: ata1: reset failed, giving up
Nov 19 13:21:01 Tower kernel: ata1.00: disabled
Check/replace cables.