JT wrote:
Thanks for all the responses here and offline. Here are some answers to
questions about our environment:
- The 2096-T01 is our only processor. We are running z/OS 1.11.
- We do not currently use sub-capacity processing. We do not submit
monthly SCRT reports.
- The T01 runs at 100% every night for 10 hours.
- The IMS address space and MPRs are up from 6AM-8PM daily. These
address spaces average LT 3% utilization during this time. The peak for a 30
minute interval is almost always under 5%.
- There is a small amount batch IMS during the nightly cycle (after 8PM).
- We run IMS TM/DM. Some IMS TM also use DB2.
- We currently use CA-MIM when the TECH LPAR is up - not GRS.
- IMS DM and TM are currently under EWLC pricing.
The main IMS application is critical to our business. It is not scheduled to be
replaced for at least 5 years.
Several folks commented off-line that if we only use a single CEC there is no
possibility of savings.
Planning for Sub-capacity Pricing on z/OS indicates the sub-capacity pricing
metric operates at the LPAR level. I did not see anything about CEC
limitations. Did I miss something?
You did not. Start at
http://www-03.ibm.com/systems/z/resources/swprice/
and discover that, if you establish a second LPAR and run IMS (and, potentially
DB2) only in that LPAR you can indeed use sub-capacity pricing. There's a link
to the sub-capacity-eligible software from the EWLC description.
Are there any small shops out there that have been successful at controlling
IMS costs by creating a separate 'IMS LPAR'?
Not IMS, but CICS/TS and DB2. The hardest part was determining beforehand just
how much savings we could expect. Use your business partner to find out the
cost given the MSU consumption by the (new) LPAR.
Bob
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
