----- Original Message -----
From: "David G. Schlecht" <[email protected]>
Newsgroups: bit.listserv.ibm-main
Sent: Tuesday, April 13, 2010 2:51 PM
Subject: Re: RMM and VRSMIN
Thanks, everyone, for the replies. We have 13,000 VRSs between two
sysplexes. We're in the process of removing the unnecessary ones (90%?)and
combining some. Most came as part of the migration from TLMS.
Again, my thanks for your replies. I'll be changing VRSMIN to around 1000
to start with.
-----Original Message-----
From: Mike Wood [mailto:[email protected]]
Sent: Tuesday, April 13, 2010 1:31 AM
To: [email protected]; David G. Schlecht
Subject: Re: RMM and VRSMIN
David, Consider that the loss of just a single VRS could cause you to
lose
a lot of data. So, the problem is not about losing/deleting 1000s it is
about avoiding loss of data.
RMM provides multiple options to help with this:
VRSMIN allows you to identify a value which you identify as the critical
number of VRS. This might be ALL of your VRSes. Some one with just a small
number may feel the count should match there number of VRSes. If you have
1000s, which I wouldnt recommend ;-), and you look to VRSCHANGE - you
could
perhaps do what Tom suggests.
VRSCHANGE This is a way to enforce a 'trial run' of VRSEL should anyone
add/change or delete VRSes. Using this option might make the VRSMIN count
less important
VRSRETAIN, VRSDROP, EXPDTDROP These more recent options provide a way to
direct rmm to detect when result of retention are not what you would
normally expect.
RMM provides these options because of the cost of data loss, and the
effort
required to retrieve data that has been scratched prematurely. We have to
think about deliberate actions, accidents, and code defects as the
possible
triggers.
Mike Wood RMM Development
On Mon, 12 Apr 2010 10:50:49 -0700, David G. Schlecht
<[email protected]> wrote:
Hi All,
We're considering changing the EDGRMM PARMLIB member to set VRSMIN to some
minimal value such as 1000 and FAIL. But, for the life of me, I just
can't
see a benefit for this. Looking over the books, this seems that it would
only benefit us in the event someone accidentally deleted thousands of
VRSs
and this just doesn't seem accidentally feasible.
Is it possible to accidentally delete thousands of VRSs? It appears the
DELETE VRS panel doesn't allow a generic VRS Name and the Data set mask
only
applies to one VRS so what's the worry? What am I missing? What do you do
at
your shop?
- David
David,
Take a look at EDGRVCLN, it's a Rexx exec designed to identify VRS's for
consolidation and cleanup.
Regards,
Tom Conley
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