What is the 'real' tape length

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Article #10075

#10075

From: David J. Camp
Date: Thu, 05 Jan 1989 07:14

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Spots,

A while ago I inquired on sun-spots about the real vs. apparent length of
a tape.  What I had noticed is that the length written on the tape's label
(600') was less that expected by dump.  I got several good answers, and
this is a summary.

The length of tape expected by dump is the real length of the tape times
the number of tracks minus some factor for inter-record gaps.  If you use
/dev/rst8 you get 9 tracks, but if you use /dev/rst0 you get only 4
tracks.

-David-

Bitnet:   david@wubios.wustl                ^      Mr. David J. Camp
Internet: david%wubios@wucs1.wustl.edu    < * >    Box 8067, Biostatistics
uucp:     uunet!wucs1!wubios!david          v      660 South Euclid
Washington University Medical School               Saint Louis, MO 63110

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!rutgers!mailrus!tut.cis.ohio-state.edu!ukma!husc6!rice!sun-spots-request
From: david@wubios.wustl.edu (David J. Camp)
Newsgroups: comp.sys.sun
Subject: What is the 'real' tape length
Message-ID: <8812282220.AA12678@wubios.WUstl.EDU>
Date: 5 Jan 89 07:14:16 GMT
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Organization: Faculteit Wiskunde & Informatica, Universiteit van Amsterdam
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Original-Date: Wed, 28 Dec 88 16:20:53 CST
X-Sun-Spots-Digest: Volume 7, Issue 89, message 9 of 11