Re: S.M.A.R.T. hard drives WAS: SCSI vs. IDE performance

From: Suchandra Thapa <s-thapa-11(at)alumni(dot)uchicago(dot)edu>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: S.M.A.R.T. hard drives WAS: SCSI vs. IDE performance
Date: 2003-11-29 04:41:50
Message-ID: 1070080910.448.4.camel@hepcat
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On Fri, 2003-11-28 at 21:45, Bruce Momjian wrote:
> Do SCSI drives even do relocation? I had a Seagate SCSI drive that
> would beep every time I tried to access a bad block, basically telling
> me to replace the drive.

I'm pretty sure that SCSI drives, or at least more modern ones, do. The
ones I've used have a list of bad blocks stored internally and will
relocate blocks automatically. The drives allowed you to reset this
list by running a low level format from the scsi controller. The drives
would then clear the bad blocks list and recheck disk blocks again.

--
Suchandra Thapa <s-thapa-11(at)alumni(dot)uchicago(dot)edu>

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