Appreciate all of the responses so far. The Hitachi UPS V is relatively new on the market and was not ordered with any PAV in the initial buy. Yes....it will be FICON attached and serve two z/OS LPARs along with a z/VM system with two IFLs.
I have read the z/VM 5.3 enhancement notes talking about Hyper-PAV support. I just couldn't find anything....or anyone.....that talked about dynamic PAV. I did find a paper that talked about how to do "dynamic" PAV with 5.1 or 5.2, but it looked real messy. The 5.3 "CP Planning and Admin" book outlines PAV pretty well, but seems to be generic as far as which type of PAV is being discussed. We would obviously like to do Hyper over anything else for all of the obvious work intensive reasons. I don't really have any way to test whether we are going to have I/O queueing problems since we can only do 3390-3 right now. The UPS V is still in install process and the planned servers after that. Trying to think logically, by running larger volumes with ......for example.......a DB2 database on a M9 or M27 accessible to 30k+ users might be a problem without PAV. We would like to do it up front instead of catch up later.
