Date: Wed, 22 Mar 1995 01:05:37 +0000 From: Amancio Hasty <hasty@star-gate.com> To: Poul-Henning Kamp <phk@ref.tfs.com> Cc: hackers@FreeBSD.org, faq@FreeBSD.org Subject: Re: Why IDE is bad Message-ID: <199503220105.BAA10094@star-gate.com> In-Reply-To: Your message of "Wed, 22 Mar 1995 00:58:39 PST." <199503220858.AAA04645@ref.tfs.com>
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> > > I just made a simple test, this shows why IDE is inferior to SCSI for > > > FreeBSD: > > > > > > Western Digital 540 Caviar EIDE disk on IDE controller: > > > ------------------------------------------------------- > > > Quantum Empire 2100 SCSI-II disk on VL-buslogic controller > > > > Do the above drives have similar performance characteristics? > > That is entirely insignificant. The interesting thing is that Perhaps this is so ... However, if the IDE drive is fast your data transfer rate could be faster. As for the CPU load, Western Digital drives support DMA. Now don't ask me if it works or not or which other IDE drives support DMA. Amancio
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