I thought that the bpi was for bits per inch.  Check of glossary
confirms this.  So divide by 8.
------------------------------------------------------------------------
Larry Simonsen          Phone: 801-489-2450
Flowserve Corporation   Fax: 801-491-1750
PO Box 2200             http://www.flowserve.com
Springville, UT 84663   e-mail: [log in to unmask]
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                -----Original Message-----
                From:   Eric Bender [mailto:[log in to unmask]]
                Sent:   Thursday, August 13, 1998 12:56 PM
                To:     [log in to unmask]
                Subject:        Re: tape capacity

                At 11:18 AM 8/13/1998 -0700, Donna Garverick wrote:
                >i guess this is an oldie but a goodie sorta question...
                >
                >how much information can a 2400' reel (yes, reel) of
tape
                >contain -- in theory.  i guess, perhaps, the better
question
                >is -- does anyone remember the equation for calculating
                >this?       - d
                >
                >--
                >Donna Garverick     Sr. System Programmer
                >925-210-6631        [log in to unmask]


                So, assuming no Inter-Record (or Inter-Block) Gaps, at
1600 BPI that would be:

                1600 x 12in/ft x 2400 = 46,080,000 bytes  (46 MB)

                and at 6400 BPI it'd be 184,320,000 bytes (184 MB).

                So, with IRG's and labels and other overhead, actual
values would be less
                than these theoretical calculations.

                Regards, Eric Bender

                PS. Someone check these calculations. Please!