Date: Sat, 25 Mar 1995 18:13:45 -0800 (PST) From: Poul-Henning Kamp <phk@ref.tfs.com> To: teren@lyria.stanford.edu (Terry Lee) Cc: freebsd-hackers@FreeBSD.org Subject: Re: Why IDE is bad Message-ID: <199503260213.SAA19802@ref.tfs.com> In-Reply-To: <Pine.BSF.3.91.950325180639.8842A-100000@lyria.stanford.edu> from "Terry Lee" at Mar 25, 95 06:13:14 pm
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> On a SCSI bus, I can have multiple drives and if I balance the load on > the drives then I am able to increase the overall throughput of my disk > subsystem up to the theoretical max of 10 MB/s right? > > Is this true for IDE or E-IDE? E-IDE can achieve bus throughput > 10 > MB/s but there are few drives that can sustain such transfers. But if I > have two drives on the same IDE adapter and I balance the load across the > two drives, will I get the same performance benefit as with multiple SCSI > drives? > > What if I have two drives on two different IDE adapters? IDE still needs to CPU to actually move the data... -- Poul-Henning Kamp <phk@login.dknet.dk> -- TRW Financial Systems, Inc. 'All relevant people are pertinent' && 'All rude people are impertinent' => 'no rude people are relevant'
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