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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: Q. why 5400 and 7200 rpm disk drives?
Date: Fri, 11 Oct 2002 11:52:55 GMT
NNTP-Posting-Date: Fri, 11 Oct 2002 04:52:55 PDT
Trevor Wilson wrote:
> "John Eaton" wrote in message
> > Just be thankfull that they settled on a fixed speed. Didn't Apple's LISA
> > have a floppy that changed rpm for every track?
> **Excellent idea, if you ask. Much better packing density. Obviously another
> Apple product, which was ahead of its time.
There are better ways. Zoned bit recording used in hard drives is more
complicated electronically but avoids the nearly impossible problem of
changing spindle speed quickly during seeks. Optical disks do CAV or CLV
depending on system requirements (particularly seek performance where
CLV is extremely bad).
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org
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