Dumping to an exabyte tape drive

[wolf paul]

In article <1990Sep1.143812 at suned1.nswses.navy.mil> jht at suned1.nswses.navy.mil (Jim Tibbs) writes:

)
)     dump 0ubsdf 64 12000 43000 /dev/rst1 "file-system"
)

And in article <linegar.652252313 at bcars85> linegar at bcars85.bnr.ca (Derick Linegar) writes:

)
)	/usr/etc/dump 0ucbsdf 56 5190 4100000 /dev/whatever file-system
)

And in article <FPB.90Aug31172357 at schlitz.ittc.wec.com> fpb at schlitz.ittc.wec.com (Frank P. Bresz) writes:

)
)dump 0ufsd /dev/nrst2 6000 54000 /dev/id000a
)

These figures seem quite inconsisten. Which is correct?
Would someone at SUN care to comment, ideally the person who wrote
their drivers?

A Standard Tape has a density of  6250 bpi and a length of  2300 feet

Jim Tibbs specifies a density of 43000 bpi and a length of 12000 feet

Derick Linegar specifies       4100000 bpi and a length of  5190 feet

Frank Bresz specifies density of 54000 bpi and a length of  6000 feet

-- 
Wolf N. Paul, IIASA, A - 2361 Laxenburg, Austria, Europe
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