95 lines
3.9 KiB
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95 lines
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From fork-admin@xent.com Tue Sep 17 11:30:12 2002
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From: Eugen Leitl <eugen@leitl.org>
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To: "Stephen D. Williams" <sdw@lig.net>
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Cc: Gary Lawrence Murphy <garym@canada.com>,
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Udhay Shankar N <udhay@pobox.com>, Adam Rifkin <adam@KnowNow.com>,
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<FoRK@xent.com>
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Subject: Re: storage bits
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Date: Tue, 17 Sep 2002 11:18:33 +0200 (CEST)
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On Mon, 16 Sep 2002, Stephen D. Williams wrote:
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> To make what work? I already pointed out that a single drive is
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> comparable between IDE/SCSI.
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Alas, that's wrong. Both the drives are faster (10..15 krpm vs. ~7 krpm,
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faster seek), and the EIDE protocol is ridiculously dumb (queing;
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disconnect).
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> I think you're wrong with recent releases. I'll check this week.
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> There's also JFS and XFS.
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None of them are production quality. Right now only ext2 and ext3 qualify.
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It will take a good while (a year, or two) before we can trust anything
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else.
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> >SCSI has got advantages still, particular if it comes to off-shelf
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> >high-density racks.
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> >
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> Check out RaidZone.com.
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Have you looked inside a dual-CPU 1U Dell? Three drives are easy to get
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in. Anything else would require a redesign, and would in nontrivial
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thermal engineering issues.
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> A number of vendors are putting the Promise IDE hardware on the
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> motherboard. All that remains is the proper drive socket.
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I can't think of a single major vendor who sells 1U systems with hardware
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EIDE RAID.
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> Additionally, you can get hardware IDE raid as a pair of drive bays or
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> even an IDE-IDEx2 controller that can be screwed into a 1U chassis.
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I believe you that stuff can be found, if one is looking for it. However,
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I wouldn't put this into production unless I've had that system hanging in
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the local rack under simulated load for a half a year.
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