wagner (07/29/82)
We are looking for high-bandwidth ways of passing data
between two 370 type systems. One system will be running VM
and UTS, the other MVS. The primary thrust, initially, of
data flow will be from UTS to MVS. A quick and dirty solu-
tion, due to be completed today or tomorrow, will be several
9600 baud lines from RSCS under VM to JES2 on the MVS
machine. The bandwidth will be tight, but workable for now.
We are looking primarily at two solutions, one using a CTCA,
and one using shared DASD. Either of these pieces of
hardware has sufficient bandwidth to solve the problems -
neither will just drop in without some software we dont have
at our finger-tips.
The CTCA is on order, due to arrive shortly. We do not
run NJE on JES2, so just connecting them wouldnt work. Pro-
grams to talk to CTCAs would be nice, provided we didnt have
to write them (no time). Running VM and RSCS on both
machine would be ok, provided we could handle the VM over-
head on the MVS machine (anyone have any figures for this
sort of thing?).
Another option would be running JES2 MAS or any form of
shared DASD to get the files across. JES2 MAS would be more
work than we want to do, but might be doable if we couldnt
find a smaller program to do it. IBM tells me that we cant
run shared DASD between a VM machine and a native machine.
I cant beleive that, and have shown them the place in the
SPL where it says it should work. But I would rather have
evidence from someone who is doing it. I am ready and wil-
ling to dedicate the DASD to the Virtual Machine on the VM
side and forgo alternate paths, which is sufficient to make
real reserve/release work.
Are we missing other options? Has anyone done any of
these things before? Does anyone have code that works for
these options? Appreciate anything anyone can suggest.
Michael Wagner, UTCS (decvax!utzoo!utcsstat!wagner)