[5434] in linux-scsi channel archive
Re: Dumb question: Which is "better" SCSI or IDE disks?
daemon@ATHENA.MIT.EDU (D. Lance Robinson)
Wed Dec 16 14:35:07 1998
Date: Wed, 16 Dec 1998 10:56:41 -0700
From: "D. Lance Robinson" <lancer@airways.com>
Reply-To: lancer@airways.com
To: Maxim Surdu <maxim@mas2000.msk.ru>
CC: shendrix@escape.widomaker.com, linux-scsi@vger.rutgers.edu
Maxim Surdu wrote:
> The performance of wide SCSI drives is not so different from narrow/fast SCSI
> as it mostly depends of RPM speed and thus your fast/narrow drives have
> almost
> the same performance as your wide Hawk (Hawk is slow 5400 rpm drive).
True, but when multiple devices are used on the same scsi bus, using
wide devices will improve performance. I don't have benchmark numbers,
but a wide device is connected to the bus half as long when doing a data
transfer. This not only gives a quicker completion time, it also allows
other devices to access the bus sooner. Response time increases overall.
<>< Lance.
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