Re: problems with Hitachi 1TB SATA drives

On Tuesday 24 July 2007, Jeremy Chadwick wrote:


* SCSI is outrageously expensive even in 2007. I have yet to see
any shred of justification for why SCSI costs so much *even today*.
It costs only a smidgen less than it did 15 years ago.

* SCSI is on its way out. Seagate recently announced that
they'll no longer be supporting SCSI products, possibly by the end
of next year:

"Seagate has announced that by next year they will no longer be
supporting SCSI product and will be moving customers to the SATA
interface."
http://www.horizontechnology.com/news/market/market_perspective_sto
rage_04-11-2007.php

I'm willing to bet others will follow suit.

It's more than just an interface. SCSI drives are manufactured with
completely different components than IDE/SATA drives. The platters
have different materials on them, the heads are different, the
actuators are different. The higher spindle speeds present different
engineering challanges, if you know anything about physics you'll
realize the difference between spinning something at 7200rpm and
15,000rpm is not linear in terms of the forces involved.

You're really paying for two things when you buy SCSI/SAS.

reliability under 100% duty cycle
seek times

As far as that article goes, I wonder if they are including SAS in the
SATA catagory or the SCSI catagory. It's perfectly reasonable to
phase out U320 SCSI....I can't see SAS going away any time soon.

--
Thanks,

Josh Paetzel

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