Ron, I also did the same as John has MVS at that time under VM , with no issues. The Sungard people were great, so if you have gaps in understanding or knowledge they help out in a DR situation. Almost all of the DR problems I have seen, done a ton of tests, turned out to be poor planning and execution. I am of the mindset always, 'plan the work and work the plan'...
Scott ford www.identityforge.com On May 16, 2012, at 4:03 PM, Ron MacRae <ronmac...@hotmail.co.uk> wrote: > Hi all, > We are currently an exclusively z/OS site with multiple LPARs sharing > a single IOCDS and DASD farm. We are about to install z/VM in a new LPAR and > I'm worried about both OSs sharing the same DASD farm. They will not be > sharing at the volume level. > > I've read through the install doc and it all seems fine, you tell the install > process 6 or 9 unit adresses and it goes and loads stuff onto them and then > you IPL. There is no mention of modifying other volumes, however there are > include and exclude unit address lists that you can specify to define what > z/VM will try to look at, which presumably you can't get at until after the > basic install and IPL. Also z/VM can issue sense commands to determine what > devices are out there. > > The reason I'm worried is that in a previous life, over 30 years ago, my > previous company attempted to do the same between an VM system and a DOS/VSE > system. This was a long time ago on a real machine in pre LPAR days. > When they brought up VM for the first time it objected to the VSE VTOCs it > found and rewrote them as OS VTOCs and we lost the whole DASD farm. > Management were not best pleased. I wasn't directly involved at that time so > I'm not 100% sure of my facts here and perhaps the guys who did this did > something wrong, however my worry still remains. > > My question is - Do we have to isolate z/VM from the z/OS volumes or will > z/VM play nice and leave stuff alone? > > I just want to double check that VM will only touch the 6 volumes it is given > at install time. > > Regards, Ron MacRae. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
