On Dec 2, 2015, at 2:58 PM, Joel C. Ewing wrote:
I just weighed the one almost-full box of some old programs and data
cards that I have retained for show-and-tell over the years, and it
is a
little over 8 lbs. Since the cards have holes punched, have some
lighter cardboard spacers, and new cards pack more tightly, I would
estimate 10 lbs as a better approximation for a box of 2000 unused
cards.
Before we started conversion from DOS/VSE to MVS in 1985, all our
production JCL was on cards in several card filing cabinets. My
recollection is that a cabinet drawer could hold around two boxes of
cards, so the maximum capacity of one cabinet might have been on the
order of 40 boxes of cards. We could easily have had somewhere in the
neighborhood of 0.5 - 1.0 tons of cards containing JCL. A larger shop
might literally have had several tons of JCL.
Joel C. Ewing
Joel:
Interesting. I have never worked in a shop (last say 45 years) where
there was that much punched cards. There were some cases where the
programmer submitted boxes of cards for one time update to a source
lib and maybe 5 or so JCL cards. Production was similar one or two
job cards a joblib and exec and then probably either a /* or // card.
None of the shops I have ever worked in used that much JCL PERIOD.
This does not include a very few jobs that had "data" cards mind you.
Those types of jobs were rare and were handled as a card to tape on
the dos side and used a tape on the MFT/MVT side.
Ed
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