If you have the Integrity (MII) component of MIM, you may want to run two
MIMplexes for enq managment of datasets:
Set up two MII environments in your existing sysplexes, using the VCF
(virtual control file) in your basic 'plex, and a CF-structure based star
for your parallel sysplex. Convert your GRS RNL's to MII control statments,
and specify GRSRNL=EXCLUDE (IIRC) in IEASYSxx on all the images.
When you merge your basic 'plex into the parallel 'plex, you may want to
update the old basisc 'plex MII to use it's own star structure (or not -
YMMV).
You won't have any dataset name conflicts in this scenario. I have run
as
many as 22 images divided into 8 MIMplexes in a single parallel sysplex this
way. We also had two other parallel sysplexs of similar ilk...
Randy
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED]
Behalf Of B Sysprog
Sent: Wednesday, November 29, 2006 6:18 AM
To: [email protected]
Subject: Single sysplex
Hello list -
We have two separate zSeries processors, each with its own production
sysplex.
CPUX - 2-LPAR basic sysplex with JES2 and ACF2. GRS ring.
CPUZ - 4-LPAR parallel sysplex with JES3 and RACF, using ICF. GRS star.
Both CPUX and CPUZ share two ESCON directors, disk and tape controllers.
Shared DASD is minimal; there is currently no GRS between the two sysplexes.
There is no technical reason to combine the totally separate sysplexes into
a single sysplex,
however, there is significant financial savings for doing so. Therefore, we
have been asked to begin a study of the issues and steps required to make
this happen.
Has anyone successfully combined very dissimilar sysplexes into a single
sysplex?
I am very clear on the hardware requirments. What are the software cautions
about such an endeavor? We already suspect GRS will present a challenge in
combining RNLs. Because we will not share much DASD (besides that for couple
datasets, MIM and STK control datasets), we don't expect that the two
different Security packages will be an issue -- has anyone discovered
otherwise?
We have been told that JES2 and JES3 will not present a problem in the same
sysplex.
Thank you,
BK Kosmach
MVS System Programmer
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