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Gary Lawrence Murphy <garym@canada.com>,
	Udhay Shankar N <udhay@pobox.com>, Adam Rifkin <adam@KnowNow.com>,
	<FoRK@xent.com>
From fork-admin@xent.com  Tue Sep 17 11:30:12 2002

On Mon, 16 Sep 2002, Stephen D. Williams wrote:
> To make what work?  I already pointed out that a single drive is
> comparable between IDE/SCSI.
Alas, that's wrong. Both the drives are faster (10..15 krpm vs. ~7 krpm,
faster seek), and the EIDE protocol is ridiculously dumb (queing;
disconnect).
> I think you're wrong with recent releases.  I'll check this week.
> There's also JFS and XFS.
None of them are production quality. Right now only ext2 and ext3 qualify.
It will take a good while (a year, or two) before we can trust anything
else.
> >SCSI has got advantages still, particular if it comes to off-shelf
> >high-density racks.
> >
> Check out RaidZone.com.
Have you looked inside a dual-CPU 1U Dell? Three drives are easy to get
in. Anything else would require a redesign, and would in nontrivial
thermal engineering issues.
> A number of vendors are putting the Promise IDE hardware on the
> motherboard.  All that remains is the proper drive socket.
I can't think of a single major vendor who sells 1U systems with hardware
EIDE RAID.
> Additionally, you can get hardware IDE raid as a pair of drive bays or
> even an IDE-IDEx2 controller that can be screwed into a 1U chassis.
I believe you that stuff can be found, if one is looking for it. However,
I wouldn't put this into production unless I've had that system hanging in
the local rack under simulated load for a half a year.