Hello,

 

My parity drive keeps red balling and dropping out of my unRAID setup.  The syslog shows the following:

 

Jan 20 19:42:01 nas kernel: ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Jan 20 19:42:01 nas kernel: ata5.00: configured for UDMA/133
Jan 20 19:42:01 nas kernel: ata5: EH complete
Jan 20 19:43:32 nas kernel: ata5.00: exception Emask 0x50 SAct 0x0 SErr 0x280900 action 0x6 frozen
Jan 20 19:43:32 nas kernel: ata5.00: irq_stat 0x08000000, interface fatal error
Jan 20 19:43:32 nas kernel: ata5: SError: { UnrecovData HostInt 10B8B BadCRC }
Jan 20 19:43:32 nas kernel: ata5.00: failed command: READ DMA EXT
Jan 20 19:43:32 nas kernel: ata5.00: cmd 25/00:00:a0:cc:09/00:04:11:00:00/e0 tag 16 dma 524288 in
Jan 20 19:43:32 nas kernel: res 50/00:00:9f:cc:09/00:00:11:00:00/e0 Emask 0x50 (ATA bus error)
Jan 20 19:43:32 nas kernel: ata5.00: status: { DRDY }
Jan 20 19:43:32 nas kernel: ata5: hard resetting link

 

Which keeps repeating over and over.

 

I've done some googling and suggestions seem to be:

 

1) Bad power supply

2) SATA interface failing (i.e. bad PCI card)

 

I can't remember if this is hosted on my PCI-e SATA card or not, I don't think so, think this is on the MB as it's my only 3TB drive.

 

I have run a SMART short self test and the drive passed fine.  However the "Disk attributes" SMART has four red rows on Spin Up Time, Power on Hours, Temperature, CRC Error Count.

 

Any ideas on what to do next?

 

Many Thanks

My first suggestion would be to check the power and sata cables to each drive and card / motherboard.

 

After that, I would remove as many power splitters (if any) you have going to the drives from the power supply if possible

 

If still not getting anywhere, next guess would be power supply followed by the HBA.

Thanks - I use SilverstoneTek CP05 power/sata connectors so have another on order to swap over firstly.

 

Will report back when I've swapped it.

I would try an avoid daisy chaining those CP05 power connectors if at all possible