----------------------------------<snip>---------------------------------
rfocht...@ync.net (Rick Fochtman) writes:
At Clearing, we ran MVS very nicely on three 4341 Model Group 2 boxen
for three years and it ran very nicely. Nowdays, my pocket calculator
probably has more raw compute power but the fact remains that we were
very happy with the equipment, until our workload grew beyond their
capacity to process it. IIRC, the DASD farm was a mix of 3330-11's and
3350's. Talk about ancient.....
re:
http://www.garlic.com/~lynn/2010m.html#41 IBM 3883 Manuals
... group 2 was faster machine introduced later ... however, if you were
running with (existing?) DASD farm with mix of 3330-11s and 3350s ... it
was possibly upgrade of existing 370 machine (possibly single 158 to
three 4341 ... or maybe from a single 168?). it might have even been an
pre-existing MVS (that didn't require the new 3033 mvs microcode assist)
... and likely within a traditional looking datacenter.
---------------------------<unsnip>-----------------------------------
Those three 4341's replaced two s/370 148's and two 3031's. With the mix
of equipment we had, we were experiencing problems with checkpoint
lockout when we shared the spool. Also with DASD Reserve/Release.
Rick
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