Although this doesn't answer the original poster's question, I think
Mike made an error. You can IPL z/VM 3.1.0 or 4.x under VM/ESA, because
those z/VM releases can still run in 31-bit mode. z/VM 5.x cannot run
as a guest of VM/ESA.
"Bad facts make bad laws." -- Frank Zappa, at the PMRC hearings
From: VM/ESA and z/VM Discussions [mailto:VMESA-***@LISTSERV.UARK.EDU] On
Behalf Of Mike Walter
Sent: Wednesday, March 15, 2006 09:17
Subject: Re: VM/ESA 2.4 under z/VM 5.x
For those who weren't reading closely enough, Dan asked if he could run
an out-of-support VM/ESA 2.4.0 system as a guest under a supported z/VM
5.x host system.
I can't think of a single reason that this should not work. We still
have our old VM/ESA 240 res packs spinning in the data center. I
attached them to my own ID (R/O - to keep from changing anything), and
IPLed them from my ID up to the first prompt (COLD, WARM, etc.). That
VM/ESA 240 guest IPL was performed on a z800 running z/VM 510.
The architecture for z/VM 510 does not have anything specific to prevent
the IPL of a VM/ESA system. Now going the other way -- trying to IPL a
64-bit z/VM anything under VM/ESA will *not* work, since VM/ESA does not
support the 64-bit addressing required by zArchitecture.
So... if Dan was asking because he needs to spend some time converting
apps from VM/ESA to z/VM 5.x, and cannot set up another LPAR in which to
install z/VM 5.x, then yes, you can still run your old VM/ESA 240 system
as a guest of z/VM 5.x. But letting general users access the VM/ESA 240
guest will be different, as would accessing 1st-level hardware devices
(e.g. tapes drives). Maybe a little more information about the need
would yield a more thorough answer.
The opinions expressed herein are mine alone, not my employer's.
On Mon, 13 Mar 2006 13:50:56 -0600, Dan Andrada
>Just wanted to find out if anyone has been able to run VM/ESA 2.4 as a
>guest under z/VM 5.x - any info would be greatly appreciated!
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