[net.unix-wizards] TS11 and tar problems

dw (02/27/83)

I have the unfortunate luck luck of being stuck with a TS11 tape drive on my 
11/34.  The big problem is that it doesn't seem to want to read tapes which
it previously wrote.  In particular, I have a heck of a time reading tar 
tapes which I just wrote!  Tar gives a "directory checksum error" and then
quits!  I have not noticed this problem when reading tapes which were written
on other systems.  The quality of the tape seems to make a difference, but
even Graham Epoch 480's fail about 50% of the time.

Has anyone else seen this problem?  DEC Field Service has been of no help,
except to say that I should buy tape from them and that I should clean the
heads after every couple of tapes (are they serious?  Yes, and it seems to
help!).

Also, has anyone got a version of tar which attempts to recover from directory
checksum errors?

(My apologys if this has been covered before.  We just came on the net.)

Don Wegeng
Thanks!

Xerox Corporation
Rochester NY

{seismo, allegra, brl-bmd}!rochester!rocksvax!rocks34!dw