These messages appeared in the kern log file the other day:

Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): WRITE_FPDMA_QUEUED. ACB: 61 18 38 ce 72 40 0b 00 00 00 00 00
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): CAM status: Uncorrectable parity/CRC error
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): Retrying command
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): WRITE_FPDMA_QUEUED. ACB: 61 60 58 ce 72 40 0b 00 00 00 00 00
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): CAM status: Uncorrectable parity/CRC error
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): Retrying command
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): WRITE_FPDMA_QUEUED. ACB: 61 08 b8 cf 72 40 0b 00 00 00 00 00
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): CAM status: Uncorrectable parity/CRC error
Jun 21 22:06:06  enterprise kernel: [282015] (ada1:ahcich1:0:0:0): Retrying command

The disk announces itself as:

ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <ST500DM002-1BD142 KC45> ATA-8 SATA 3.x device
ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C)
ada1: quirks=0x1<4K>
ada1: Previously was known as ad6

Elsewhere on the Net I’ve been reading about faulty SATA cables and insufficient power. I doubt the 850 W power supply is to blame, unless there’s a faulty wiring. Maybe it’s a faulty SATA cable. Continue reading Are one of the disks beginning to fail? →