[geeks] true length of DDS (and other) tapes

[David L Kindred (Dave)]

Today's seemingly silly questions:

Does anyone know how precise the manufacturing tolerances are on DDS and
other tapes?

Can anyone confirm, from experience or otherwise, that the tape length
or other variables are sufficient that you can't guarantee that the
amount of data you can fit one any given DDS tape will necessarily fit
on another of the same "length"?

Are there tricks used by commercial duplicators, other than making sure
the "masters" are in fact shorter than any potential copies?

BTW, if you haven't deduced it yet I have some user issues in that they
can't copy a 60m DDS tape onto another 60m DDS tape without getting a
"No space left on device" error. And no, there isn't a compression
mis-match (or so they claim).


Thanks!

-- 
David L. Kindred <mailto:d.kindred at telesciences.com>
Unix Systems & Network Administrator
Telesciences, Inc. <http://www.telesciences.com>
Support: <http://support.telesciences.com>
2000 Midlantic Drive, Suite 410, Mt. Laurel, NJ 08054
Tel: +1.856.866.1000 ext. 4184
Fax: +1.856.866.0185
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