Re: [Q]: formula for calculating BPI needed

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From
Joe Greco <jgreco@brasil.moneng.mei.com>
Date
29 Aug 1996 07:30:40
Subject
Re: [Q]: formula for calculating BPI needed
Message-ID
199608291429.JAA06769@brasil.moneng.mei.com


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> > since the capacity of a 295 feet-DAT-tape is about 2 GB.
> > After scanning the sources of dump for the estmated-tapes-formula,
> > i found some strange constants being used there that i do not
> > understand and that are not documented nor explained anywhere.
> > I want to rewrite the formula for this calculation in
> > the dump-sources but i need some informations on this topic.
>
> no, you dont ;) well maybe you do but others dont want you to :)
> the formulas in dump are there for the old 9-track tapes.
> just use the newer parameters: B and b.

Modifying the manual page to include a description along these lines might
be a much better utilization of time... modifying the formulas is silly
because it will fail when we move on to another major type of tape
technology. Jonathan's suggestion to use B and b is probably right on.

... JG


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