From owner-freebsd-chat Thu May 28 14:16:16 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA27291 for freebsd-chat-outgoing; Thu, 28 May 1998 14:16:16 -0700 (PDT) (envelope-from owner-freebsd-chat@FreeBSD.ORG) Received: from frmug.org (frmug-gw.frmug.org [193.56.58.252]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id OAA27283 for ; Thu, 28 May 1998 14:16:06 -0700 (PDT) (envelope-from roberto@keltia.freenix.fr) Received: (from uucp@localhost) by frmug.org (8.9.0/frmug-2.3/nospam) with UUCP id XAA08281 for chat@freebsd.org; Thu, 28 May 1998 23:15:53 +0200 (CEST) (envelope-from roberto@keltia.freenix.fr) Received: (from roberto@localhost) by keltia.freenix.fr (8.9.0.Beta4/keltia-2.14/nospam) id VAA12566 for chat@freebsd.org; Thu, 28 May 1998 21:48:24 +0200 (CEST) (envelope-from roberto) Message-ID: <19980528214824.A12555@keltia.freenix.fr> Date: Thu, 28 May 1998 21:48:24 +0200 From: Ollivier Robert To: chat@FreeBSD.ORG Subject: Re: Compatibility with Ultra IDE drives? Mail-Followup-To: chat@freebsd.org References: <19980528102719.D342@freebie.lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.92.3i In-Reply-To: ; from Doug White on Thu, May 28, 1998 at 11:04:17AM -0700 X-Operating-System: FreeBSD 3.0-CURRENT ctm#4311 AMD-K6 MMX @ 225 MHz Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org According to Doug White: > Hm, I'll have to demo a UltraDMA computer. I'm only on standard IDE. Is > UltraDMA tothe point where it actually is a win? Originally the critics > were saying there was no win with ultradma. The main difference is PIO vs DMA. UltraDMA should not make any real difference because no disk is able to push that much data out... You can get 11 or 12 MB/s from a modern drive (maybe a bit more with 10k rpms but they're not available to IDE) so having an IDE interface at 33 MB/s is useless IMO. Having a bigger bandwidth is useful for SCSI because you can disconnect but access to devices is "sequential" on an IDE bus. -- Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr FreeBSD keltia.freenix.fr 3.0-CURRENT #60: Fri May 15 21:04:22 CEST 1998 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message