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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
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
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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