Moeur Tim C wrote:
Good morning List,
I have a question of general test and production architecture. We
currently have some production zLinux guests running under z/VM 5.1.
z/VM is installed as an LPAR on our single Z9 server. We had, until
recently, a second Z9 on which I was running a test VM which I could use
to apply and verify maintenance and program fixes. After those fixes
have been deemed OK, we'd move them to the production VM system
(VMPROD). Now, The VMTEST Z9 has gone away and now I'm faced with a
choice of creating a second LPAR for VMTEST, or to run VMTEST as a guest
under VMPROD.
So the question is - is running my VMTEST as a guest of VMPROD good
practice? Are there exposures to flawed maintenance or program fixes
that wouldn't surface when the platform is running as a VM Guest? How
are those of you with current production and test VM systems doing this?
Tim
[EMAIL PROTECTED]
That's what we're doing right now on our z9 (and before that on our
9672-R66). Got two different test systems defined (on different packs)
to install and update 5.2 on our current 4.4 system. Hope to get them
up by late February. One will replace the production system and the
other will be for our IFL- Linux systems. From what I've read over the
last couple of years, this seems to be standard practice, and not the
luxury of having a separate LPAR or machine. There are even downloads on
the IBM download site to allow first and second level to "talk" to each
other. Go for it; you'll be glad you did, and wonder how you ever did it
any other way.
Kim
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