[SOLVED] Buffer I/O error on device / reads&writes going crazy

[georgetg]

Need some advice.

 

I've been using unraid for ages but can't figure out an error related to disk 6/7 on in my system. A few times recently I have come back and the reads and writes on disk 6/7 are crazy (millions -- could just be ui). I've replaced both drives with thoroughly precleared drives. The error I'm seeing in syslog is "Sep  5 10:45:47 Olympus kernel: Buffer I/O error on device md7, logical block 285". I replaced both disk 6/7 in the last few months.

 

Screenshot of Device Status and syslog included.

 

Googling some posts I think it may be be a power supply or possibly sata cable to the supermicro aoc sata card issue. Any thoughts on the ideal power supply wattage for 12 drives?

 

System is sitting powered down just in case, but I can pull smart reports if it will help. Thanks for the help in advance!

 

UI showing read/writes:

syslog-2014-09-05-Error.zip

[georgetg]

Had a write error disabling the disk (syslog attached). It showed up as no device after stopping the array (not sure if that means much).

 

Any ideas?

 

I'm thinking of replacing the power supply.

syslog_sept_7_2014.zip

[dgaschk]

See here: http://lime-technology.com/forum/index.php?topic=12219

[georgetg]

Any thoughts? Any guesses?

[dgaschk]

Possibly a bad or loose SATA cable. What model PSU?

[georgetg]

I ended up going from a Corsair 500W PSU to a Corsair HX650 PSU, and improved the cabling a bit. It has been 4-5 days and no errors.

[jonp]

George thanks for the follow up!  Going to mark this one solved...