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 The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this message in error, please contact the sender and delete the material from all computers. -----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: ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
