The other item to check into is how often you do an EXPIREBV.
We recycle ML2 on one LPAR, Backup on another, automation isses the recycle
commands at 4:30 AM every day and we let it run till 5:00 PM (or it might
finish by itself) when automation issues a HOLD RECYCLE, automation issues a
RELEASE RECYCLE at 5:30 PM.
Alternate your percentvalid(??) as needed on whatever days you choose. If
you have NALC priced LPAR's maybe it would be worth it to do the recycles
there? YMMV. The SETSYS (syntax escapes me at the moment) will provide
control of how many tapes you use at a time.
----- Original Message -----
From: "Spencer, Mike" <mike_spen...@bmc.com>
Newsgroups: bit.listserv.ibm-main
To: <IBM-MAIN@bama.ua.edu>
Sent: Tuesday, March 10, 2009 10:50
Subject: Re: Moving HSM RECYCLE to different LPAR in SYSPLEX
It's a good idea to shuffle the cycles around. What I've done is use my
storage management product to execute different schedules of recycles. At
6 AM the recycle is issued for everything that is zero percent full. This
takes about 5 to 10 minutes to complete. At 6:30 recycle is issued for
that days backups tapes to be recycled, beginning at five percent valid
data and then moving up based on an incremental alert system that we've
defined. The weekend is when ML2 is recycled along with the Saturday and
Sunday daily backup tapes. The whole process is complete before 8 AM and
we usually get up to everything with thirty percent valid data.
The one item to remember is if you are duplexing your tapes, take into
consideration the number of tape drives that will be required to perform
the recycle and any other possible DFHSM tape activity such as recalls.
Michael Spencer
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Michael B Smith
Sent: Tuesday, March 10, 2009 8:55 AM
To: IBM-MAIN@bama.ua.edu
Subject: Moving HSM RECYCLE to different LPAR in SYSPLEX
I'm considering moving RECYCLE from my primary host to a secondary to
offload some cycles from the primary. I'm running z/OS 1.8 on 3/4 LPARS in
the prod sysplex and 1.10 on the 4th. Anyone tried this and fell in a
ditch or were results as expected? Tips/Tricks? Any redbook,etc info in
this area.
We do of course, share HSM CDS's across the sysplex.
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