Date: Tue, 24 Jul 2007 13:46:18 -0500 From: Josh Paetzel <josh@tcbug.org> To: Jeremy Chadwick <koitsu@freebsd.org> Cc: Bill Swingle <unfurl@dub.net>, freebsd-stable@freebsd.org Subject: Re: problems with Hitachi 1TB SATA drives Message-ID: <200707241346.21714.josh@tcbug.org> In-Reply-To: <20070724182604.GA3759@eos.sc1.parodius.com> References: <46A54B6F.9010100@dub.net> <200707241230.53119.josh@tcbug.org> <20070724182604.GA3759@eos.sc1.parodius.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--nextPart1364500.QlezaVzCdu Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline 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=20 completely different components than IDE/SATA drives. The platters=20 have different materials on them, the heads are different, the=20 actuators are different. The higher spindle speeds present different=20 engineering challanges, if you know anything about physics you'll=20 realize the difference between spinning something at 7200rpm and=20 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=20 SATA catagory or the SCSI catagory. It's perfectly reasonable to=20 phase out U320 SCSI....I can't see SAS going away any time soon. =2D-=20 Thanks, Josh Paetzel --nextPart1364500.QlezaVzCdu Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQBGpkj9JvkB8SevrssRAhsVAJ9vT++Gyw7p9sC4g1v6tBnN5yytigCfUdG2 CPRH/5FB3mC4kqmxNeDocnQ= =ArBP -----END PGP SIGNATURE----- --nextPart1364500.QlezaVzCdu--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200707241346.21714.josh>