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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?
References: <firstname.lastname@example.org> <email@example.com>
Date: Thu, 17 Oct 2002 00:43:56 GMT
NNTP-Posting-Date: Wed, 16 Oct 2002 17:43:56 PDT
> Latest high speed CD burners have the front panel made of metal as a
> safety measure.
> Is it to stop the CD from flying out and injuring some one ?
I don't have my CD and DVD speed spread sheets here at home but it seems
to me CD 48X would be about 18,000 RPM at 25mm radius but most vendors
cheat and use interface speed rather than disk speed. The units I see
the guts of seem to be 12,000 RPM or less. I have one CD/DVD reader
mechanism of recent manufacture that is limited to about 4000 RPM. The
older units from the same company would do 9000 RPM. Of course the
writers write very much more slowly than they read. DVD write RPM is
usually less than 3000 RPM and CD maybe the same. OTOH, the fast writers
use higher laser power so this may be a consideration.
... 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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