Re: Consumer-grade vs enterprise-grade disk drives

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Consumer-grade vs enterprise-grade disk drives
Date: 2005-05-31 04:18:56
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Yea, it is a great paper. It is an HTML version of the SCSI PDF I
mentioned a few weeks ago:

Someone had mentioned it on the lists a few months ago but I only read
it recently and resuggested it. One problem with the web version is
that the images didn't transfer very clearly. I mention it in my
hardware performance tuning paper.


Tom Lane wrote:
> I'm not sure whether this article has been mentioned here before, but
> it definitely is worth a read:
> >From the proceedings of the FAST '03 conference:
> More than an interface - SCSI vs. ATA Dave Anderson, Jim Dykes,
> Erik Riedel Seagate Research
> Abstract:
> This paper sets out to clear up a misconception prominent in the storage
> community today, that SCSI disc drives and IDE (ATA) disc drives are
> the same technology internally, and differ only in their external
> interface and in their suggested retail price. ... This paper attempts
> to clarify the differences by illuminating some of these design choices
> and their consequences on final device characteristics.
> regards, tom lane
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings

Bruce Momjian |
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073

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