Sun TAR (and Masscomp)

[Alan Parker]

In the particular case of Masscomp<->Sun cartridge tapes:   we have
found that we can read a tar cartridge tape on the Sun (3) made on the
Masscomp if the blocking factor is 20 (I think).   This seems to be
pretty reliable.   We have found that sometimes we can read tapes on the
Masscomp, made on the Sun; but it often doesn't work.   I don't
understand why it is unreliable in this direction.