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From: baier@hal.fmi.uni-passau.de (Joern Baier)
Subject: Size of Tapes
Message-ID: <1991May8.181616.18628@forwiss.uni-passau.de>
Sender: usenet@forwiss.uni-passau.de (USENET News System)
Nntp-Posting-Host: hal.fmi.uni-passau.de
Organization: University of Passau, Germany
Date: Wed, 8 May 91 18:16:16 GMT
Lines: 30

Hi!

How can I calculate the size of a cartridge tape?

We have a lot of 3M-tapes which are labeled as follows:

	DC600A; 600 feet; 12,500 ftpi; 550 oersted tape;

I think it is not a 150M tape but it works fine with our 150M tape device.
Only once it complained that it wanted another sort of tape:

	Apr 28 11:28:30 hal vmunix: st0:  wrong tape for writing, use DC6150
	tape (or equivalent)

But this message has never appeared again after a reboot. 

So far there haven't been any problems when I tried to restore files which
I dumped to the tape.

Should I go on using those old DC600A tapes or should I try to get some DC6150
tapes? Has anyone negative experiences with DC600A-tapes on a 150M-device?

Joern

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Joern Baier     (baier@unipas.fmi.uni-passau.de) 
Jesuitengasse 9 
D-W-8390 Passau 
Tel.:   +49/851/35239 
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