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Appending to cart tapes

I have a vague memory that way back years ago, not long after cart tapes were
first put on 3600s, we tried using the documented commands to the drive for
appending to cart tapes.  The result, on at least some drives, was that the
drive went amuck and physically destroyed the cartridge (it filled up the
inside of the cartridge with crumpled up tape).  I'm sure this happened on
more than one drive, it wasn't just one broken drive.  I haven't been able
to remember any more details, but I do remember a lot of laughter about this
low-quality aspect of the cartridge tape drives.  At this point it would
have been logical to decide not to try to implement appending, because we'd
much rather have customers complaining that they couldn't append than have
them complaining that we had destroyed their valuable backup tapes.

Kalman, do you remember anything about this?  It might have been before your
time, but I don't think so.