Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!csd4.milw.wisc.edu!bionet!ames!amdahl!rtech!cpsc6a!cpsc6b!crs
From: crs@cpsc6b.cpsc6a.att.com (Chris (Look!  It's Micro-Brain!) Seaman)
Newsgroups: comp.sys.amiga
Subject: Re: disk size ...
Message-ID: <561@cpsc6b.cpsc6a.att.com>
Date: 28 Jun 89 01:11:23 GMT
References: <4167@merlin.usc.edu> <269@tardis.Tymnet.COM> <226@oscsuna.osc.edu>
Organization: AT&T (CPSC), Oakland, CA
Lines: 29

jan@oscsunb.osc.edu (Jan's Student) writes:
< crs@cpsc6b.cpsc6a.att.com (Chris (Is it Friday yet?!?!?) Seaman) writes:
< >faulkner@jmullins.harvard.edu (Don Faulkner) writes:
< >< 	CLV Constant Linear Velocity
< >< 		(for constant data rate)
< >< 		Disk puts more data on outer tracks
< >< 		Disk spins faster on outer tracks
< >
< >Don't you mean SLOWER on the outer tracks?
< >
< No, in order to get the same amount of data in a larger track with a larger 
< circumference (which is what the outer tracks are) the drive head must be
< spinning faster to cover the greater distance in the same amount of time.
< 
< John Michalos

You had better re-read the original posting - it was talking about CLV,
which allows for MORE data on the outer tracks, and the disk does spin
more slowly to achieve this.  If the drive were to spin faster on the outer
tracks, it would fit LESS data on them.  BTW, to fit the same amount of
data on a larger circumference as a smaller one, the rotation speed
does not change, this is what the original poster was talking about
when they referred to CAV (constant ANGULAR velocity).

-- 
Chris (Insert phrase here) Seaman |    ___-/^\-___      bIyIn nI' je chep.
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