Like many of us, I remember 729s, 7330s, 3420s, 3490s, etc. I remember the 
well-structured use of the tapes as related to important production jobs. The 
new "robots" (perhaps with "virtual tapes") can do this well — although there 
might be a learning process involved when something goes wrong.

However, I also remember the unstructured, informal use of tapes. They could 
sometimes be very handy when stuck in a drawer or carried to a friend's 
installation or used for an unplanned "panic" recovery involving data/programs 
many months old.

It can be a little odd how some "history" repeats itself. A considerable number 
of System Z ISVs use an emulated System Z for development of their ISV 
products. These emulators provide emulated tape drives, where the "tape" is a 
linux file on the emulated base PC. There are many ways to keep backups of 
emulated disk datasets or emulated tapes. One way is to use a memory stick and 
move/copy the emulated tapes to the memory stick, and store it in a drawer 
somewhere. Why does this process sometimes remind me of the odd usefulness of 
old-fashioned tapes?

Bill Ogden


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