********* Cross posted to IBM-Main and LPAR-Pricing ************ Folks,
I thought I had a good understanding of VWLC and how chargeable MSU's were calculated, but have recently been re-educated and it concerned me a little so I thought I'd check others understanding. The WLC announcements (linked below) and ICA attachment for WLC which include a definition of the chargeable MSU's for a product (known as Product LPAR Utilisation Capacity) as "the highest number of MSUs utilized by the by the combined LPARs in which a VWLC product runs concurrently during a reporting period. The number of MSUs is based on a rolling 4 hour average utilization." The emphasis for me was on the phrase "the combined LPARs in which a VWLC product runs concurrently", which I had interpreted to mean ALL LPAR's in which the product ran within a qualifying aggregated environment. The SCRT pages ( http://www-03.ibm.com/systems/z/resources/swprice/subcap/technology.html) support this stating "SCRT only looks at simultaneous peaks for a product running in multiple LPARs". In practice however this is not how it is applied - the Product LPAR Utilisation Capacity is calculated per CEC and then aggregated - which means it is not simultaneous peaks across all CEC's, it is simultaneous peaks within a CEC. To illustrate the difference - using the example on the SCRT site, SCRT calculates 4HRA peak for z/OS to be in hour 719 at 130 MSU's as this is the simultaneous peak. This works fine when both LPAR's are all running on one CEC - however if LPAR A was on one CEC and LPAR B on another, the peak for z/OS in LPAR A would be in hour 719 at 100 MSU's and the peak for z/OS in LPAR B hour 3 at 50 MSU's which ends up with a total z/OS MSU'age of 150, which is what SCRT reports and what you are charged for. Hour 1 1 2 2 3 3 ? 719 719 720 720 LPAR A B A B A B A B A B 4HRA 70 30 75 30 50 50 100 30 100 10 Zos Y Y Y Y Y Y Y Y Y Y DB2 Y Y Y Why is this important? I had thought in a VWLC world (for IBM products at least) that LPAR placement for SW licensing was no longer needed - however it seems it still is important. In the above example doing the exact same amount of work on 2 CEC's costs you 20 MSU's more for your VWLC licenses than it does doing it 1 CEC. Worth a thought. VWLC Announcement - http://www-01.ibm.com/common/ssi/ShowDoc.jsp?docURL=/common/ssi/rep_ca/8/877/ENUSZA00-0318/index.html&breadCrum=DET001PT022&url=buttonpressed=DET002PT005&specific_index=DET001PEF502&DET015PGL002=DET001PEF011&submit.x=7&submit.y=8&lang=en_US#Header_26 VWLC ammendment - http://www-01.ibm.com/common/ssi/ShowDoc.jsp?docURL=/common/ssi/rep_ca/9/877/ENUSZA02-0189/index.html&breadCrum=DET001PT022&url=buttonpressed=DET002PT005&specific_index=DET001PEF502&DET015PGL002=DET001PEF011&submit.x=7&submit.y=8&lang=en_US#Header_7 Peter Gammage Group IT Delivery and Support Process Manager Standard Life Employee Services Limited http://www.standardlife.com Tel: +44 (0)131 245 7024 Mob: +44 (0)7736592559 This e-mail is confidential and, if you are not the intended recipient, please return it to us and do not retain or disclose it. We filter and monitor e-mails in order to protect our system and the integrity, confidentiality and availability of e-mails. We cannot guarantee that e-mails are risk free and are not responsible for any related damage or unauthorised alteration of e-mails by third parties after sending. For more information on Standard Life group, visit our website http://www.standardlife.com/ Standard Life plc (SC286832), Standard Life Assurance Limited* (SC286833) and Standard Life Employee Services Limited (SC271355) are all registered in Scotland at Standard Life House, 30 Lothian Road, Edinburgh EH1 2DH. *Authorised and regulated by the Financial Services Authority. 0131 225 2552. Calls may be recorded/monitored. Standard Life group includes Standard Life plc and its subsidiaries. ---------------------------------------------------------------------- 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
