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Article #184Re: Inner track transfer rate vs. Outer track transfer rate
From: WARREN SAVAGE
Date: Fri, 18 Dec 1992 17:16
Date: Fri, 18 Dec 1992 17:16
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In article <1992Dec18.145311.27416@sequent.com>, cyf@sequent.com (Cyrus Foughty) writes: > I have heard two theories about one element that affects disk transfer > rate. > Theory 1: > > A higher transfer rate will result when using the outer tracks. This is true only if the drive uses constant density recording. It is quite common, especially on older disks to lay down the the same amount of bits regardless of radii, thus the xfer speed would be exactly the same. > Theory 2: > > A higher transfer rate will result when using the inner tracks. Never true (to my knowledge). The important thing to remember is that the inside of the platter and the outside of the platter take the same amount of time to make one revolution. What can change is the number of bits that are recorded on a track.
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Newsgroups: comp.arch.storage Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!ames!pacbell.com!tandem!stationd!warren From: warren@stationd.storage.tandem.com (WARREN SAVAGE) Subject: Re: Inner track transfer rate vs. Outer track transfer rate Message-ID: <1992Dec18.171658.26537@tandem.com> Sender: warren@stationd (WARREN SAVAGE) Nntp-Posting-Host: stationd.storage.tandem.com Organization: Tandem Computers Inc, Cupertino CA References: <1992Dec18.145311.27416@sequent.com> Date: Fri, 18 Dec 1992 17:16:58 GMT Lines: 23