On Tue, 21 May 1996, Niklas Hallqvist wrote:

> With the 2940UW, should I choose a 5400 RPM Ultra-wide disk or a 7200 RPM
> wide one?  (I guess that depends on the applications' locality of reference
> when getting data off disk, but I thought I might ask anyway).

That depends on how many drives you have on your system, and how
many of them support Ultra. I suspect that in almost all situations
the 7200 RPM disk will be faster, ultra or no. 

I get about 6MB/sec from my 7200 RPM Atlas drives and 4 MB/sec from
my 5400 RPM HP drives. With speeds like this, the 7200 RPM drive will
be faster even on narrow SCSI 2.

cjs

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