[Bug 14831] mptsas - Use of ATA command pass-through results in unreliable operation - drive / controller resets

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http://bugzilla.kernel.org/show_bug.cgi?id=14831





--- Comment #10 from Tim Small <tim@seoss.co.uk>  2010-01-13 12:30:47 ---
Hi Aaron,

It's possible that this is an unrelated issue.  On one of the systems with the
MPT SAS controllers, I have moved a drive from an MPT SAS channel onto an Intel
631xESB/632xESB SATA channel, and the unreliable behaviour appeared to stop.

Do you have any other drives which you can test in place of the WD drives? 
Personally I have found Hitachi SATA drives to be well engineered in recent
years from a SMART PoV.

If you'd like to open another bug, the script included in this bug might help
you reproduce the problems.  You could also try disabling NCQ and/or using a
different SATA controller (Silicon Image SiI 3132 based PCIe cards are
available very inexpensively) to see if this helps.

Thanks,

Tim.

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