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- Newsgroups: comp.arch.storage
- Path: 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
-
- 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.
-
-