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Date: Sun, 6 Jan 2002 12:10:09 +0000
From: Scott Mitchell <scott.mitchell@mail.com>
To: Anthony Atkielski <anthony@freebie.atkielski.com>
Cc: Cliff Sarginson <cliff@raggedclown.net>,
FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject: Re: Parts I recommend (formerly "Workstation and server-market")
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References: <20020105195536.27073ca2.johann@broadpark.no> <20020105170230.636999bb.matthew@starbreaker.net> <20020106071439.GE1003@raggedclown.net> <0a5b01c19683$d1087880$0a00000a@atkielski.com>
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In-Reply-To: <0a5b01c19683$d1087880$0a00000a@atkielski.com>; from anthony@freebie.atkielski.com on Sun, Jan 06, 2002 at 08:29:03AM +0100
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On Sun, Jan 06, 2002 at 08:29:03AM +0100, Anthony Atkielski wrote:
> Cliff writes:
> > Don't live in the same room as a server with
> > SCSI drives though. They are significantly noisier
> > than ATA ones.
>
> The only difference between them is in the electronics, so I don't know why
> they'd be noisier.
I'd not be so sure that they're mechanically identical -- IME the failure
rate for ATA drives is much higher than the SCSI ones, despite the fact
that the SCSI server drives do a lot more work than the ATA units in the
workstations. Of course most SCSI drives are going to be running at 10Krpm
or above, while your typical ATA drive does 5400 or 7200rpm, so there's
some extra noise for you right away... I suspect there might be some
mechanical differences between a drive that has to run reliably for years
at 15Krpm and one that's idle half the time at 5400rpm in someone's
desktop.
None of this is particularly surprising -- ATA & SCSI drives are aimed at
rather different markets these days. If you're buying SCSI, noise (and
cost) are likely to be lower down on your list of priorities than if you're
buying an ATA drive to stick in a workstation. I'm sure that drive
manufacturers are smart enough to recognise that and tailor their product
lines accordingly...
On the other hand, I'm unconvinced that it really costs three times as much
to build a SCSI drive :-(
Scott
--
===========================================================================
Scott Mitchell | PGP Key ID | "Eagles may soar, but weasels
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scott.mitchell@mail.com | 0xAA775B8B | -- Anon
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