Date: Thu, 28 May 1998 21:48:24 +0200 From: Ollivier Robert <roberto@keltia.freenix.fr> To: chat@FreeBSD.ORG Subject: Re: Compatibility with Ultra IDE drives? Message-ID: <19980528214824.A12555@keltia.freenix.fr> In-Reply-To: <Pine.BSF.3.96.980528110226.2373R-100000@gdi.uoregon.edu>; from Doug White on Thu, May 28, 1998 at 11:04:17AM -0700 References: <19980528102719.D342@freebie.lemis.com> <Pine.BSF.3.96.980528110226.2373R-100000@gdi.uoregon.edu>
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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
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