Norris,

Valid points but Willie's concern is a lack of space in his ML1 pool.
He has a choice, either add ML1 volumes (already rejected) or expedite 
migration by lowering ML1 days both in his HSM parmlib for non-SMS dayasets and 
in his Management classes. It would help to know which of his management 
classes is contributing to the problem.

________________________________________
From: Norris Jackson [EMAIL PROTECTED]
Sent: Friday, October 10, 2008 1:53 PM
To: [email protected]
Subject: Re: DFHSM QUESTION - ML1

In ISMF when you display the management classes, there are two columns
in particular to pay attention to 1) Primary Days and 2) Level 1 Days.

The primary days controls how long the data set will live on Level 0
DASD (the volumes it was created on), and the Level 1 days controls how
long it will live on the ML1 DASD before being migrated to Level 2 (ML2
tape).

The level 1 days can be adjusted, depending on your batch access
requirements, data set usage, etc; to help maintain acceptable free
space in your ML1 pool.  You just don't want to adjust it to the point
of thrashing the data sets back and forth between ML0 and ML1 or ML2.
Also adjusting your threshold down a little bit on the ML1 volume can
help, but again you have to be careful about thrashing.


Norris Jackson

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-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of O'Brien, David W. (NIH/CIT) [C]
Sent: Friday, October 10, 2008 12:34 PM
To: [email protected]
Subject: Re: DFHSM QUESTION - ML1

Any idea which of your Mgt. classes is responsible for populating ML1?

________________________________________
From: willie bunter [EMAIL PROTECTED]
Sent: Friday, October 10, 2008 1:31 PM
To: [email protected]
Subject: Re: DFHSM QUESTION - ML1

Yes, I am.  I wasn't sure about the question.  I checked the Management
classes (36).  Each of them have a different value ranging from 4 to
360.

--- On Fri, 10/10/08, O'Brien, David W. (NIH/CIT) [C]
<[EMAIL PROTECTED]> wrote:

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