On Tue, 24 Mar 2009 20:47:51 +, Ted MacNEIL wrote:
>MIMgr works because (as long as the CDS is not in a CF), every system talks
>directly with the master system (oldest IPL),
When using CTC (or XCF) communications, you can control where the MIM
VCF (Virtual Control File) lives by giving a l
Ted,
Actually, you were correct originally. Ring works between systems in an
environment that has a sysplex and systems outside the sysplex. It is Star
that works only within a sysplex. In fact, if you have only a sysplex,
there is almost zero reason to use Ring and IBM strongly recommends
>We have a monoplex, a Sysplex(5 lpars) and a Sysplex(2 lpars) that share DASD.
Sorry, I misspoke a bit.
When I said GRS-Ring was okay between two SYSPLEX's, I was wrong.
It's between images.
Since the GRS token has to be passed to each image to ensure global ENQ's, the
more the worse the respons
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Subject
GRSPLEX vs CA MIM IM
We are creating two new systems without our usual (and historic) set of
software. In researching the new setup, I found a GRSPLEX can span systems
not in a sysplex. Does this work well enough to use a GRSPLEX
have plans but no schedule
to reduce the 5 lpars to 4 or 2.
Gray
-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of
Ted MacNEIL
Sent: Tuesday, March 24, 2009 3:38 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: GRSPLEX vs CA MIM IM
-SNIP-
All of
Gray,
The GRS ring has to have CTC connections between all LPARs that you want
to share data. The more LPARs in the ring, the worse performance gets. At
one site, we had 8 LPARs (6 were in a single sysplex). It was managable for
our needs. As for sharing tape, I prefer the IBM product ATAM. Com
>We are creating two new systems without our usual (and historic) set of
>software.
>In researching the new setup, I found a GRSPLEX can span systems not in a
>sysplex. >Does this work well enough to use a GRSPLEX instead of CA MIM
>Integrity Manager?
Only GRS-Ring allows you to go outside the
We are creating two new systems without our usual (and historic) set of
software. In researching the new setup, I found a GRSPLEX can span systems not
in a sysplex. Does this work well enough to use a GRSPLEX instead of CA MIM
Integrity Manager? If you are using a GRSPLEX between systems what a
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