From owner-freebsd-questions Wed Nov 3 17:29:33 1999 Delivered-To: freebsd-questions@freebsd.org Received: from akira.lanfear.com (akira.lanfear.com [208.12.10.34]) by hub.freebsd.org (Postfix) with ESMTP id 4331914E96 for ; Wed, 3 Nov 1999 17:29:15 -0800 (PST) (envelope-from MarcW@Lanfear.com) Received: by akira.lanfear.com with Internet Mail Service (5.5.1960.3) id ; Wed, 3 Nov 1999 17:31:16 -0800 Message-ID: <13D5F9EDFD72D211BC3100105A1C2233054956@akira.lanfear.com> From: Marc Wandschneider To: 'Colin Campbell' , questions@freebsd.org Subject: RE: SCSI v IDE Date: Wed, 3 Nov 1999 17:31:15 -0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.1960.3) Content-Type: text/plain Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > -----Original Message----- > From: Colin Campbell [mailto:sgcccdc@citec.qld.gov.au] > Subject: SCSI v IDE > > I have read in many places that SCSI is "better" (due to the > ability of > the controller to issue multiple commands to the disks). But > if I have two > IDEs, each on its own controller is there any real performance benefit > with SCSI, assuming the disks are similar in performance > characteristics? SCSI disks still tend to be faster on spin speeds and access times. up to 10k for SCSI vs like 7200 for IDES (and I still think that most of the latter are 5400) As far as I'm aware, the UDMA and all that jazz that IDE drives do still isn't as good as what SCSI does -- ie. you're still going to get better multitasking, especially on an Un*x operating system out of a SCSI disk. of course, my knowledge might be way out of whack here .... marc. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message