I apologize, since I may be wrong here, which would be somewhat embarrassing given that I work for IBM, but I don't think that's entirely right. Assuming all the LPARs are on the same CEC, in such a circumstance, the number of MSUs guaranteed to any LPAR is going to depend on the weights of that LPAR versus the weights of all the other LPARs on the CEC, if they're all busy at the same time. The set of LPARs will be capped at 100 MSUs, and LPAR B will be capped at 10 MSUs, but you're not going to guarantee all capacity available to LPAR A whenever it wants it.
If, in addition to these recommendations, you gave LPAR A a weight of 999 and all the other LPARs a weight of 1, you'd be guaranteeing A could always have basically all the MSUs available to the LPAR group. I'm not sure how to make LPAR B the second favored LPAR, though; if you were to give it a weight of 100, say, with LPAR A having a weight of 999, you'd be giving LPAR B an entitlement 9% of the CEC, if it wanted it. Now, if all of these LPARs were in the same sysplex, I think you could do what you wanted to do with a fairly stringent WLM setup and LPAR weight management. If the LPARs are on separate CECs, I have no idea how to do what you want to do. --- Kevin McKenzie External Phone: 845-435-8282, Tie-line: 8-295-8282 z/OS BCP SVT, Dept FXKA, Bldg 706/2D38 Al Sherkow <[email protected]> Sent by: IBM Mainframe Discussion List <[email protected]> 04/02/2009 03:31 PM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject Re: Soft capping advice sought Put them all in one group, set the group cap to 100 Set LPAR A's defined capacity to 100, and give A the most weight in these 5 LPARs. Leave LPAR B with it's defined capacity of 10. Leave C,D and E with less weight than A & B. This will let A take all 100 MSUs if it wants that much. Al Sherkow, I/S Management Strategies, Ltd. Consulting Expertise on Capacity Planning, Performance Tuning, WLC, LPARs, IRD and LCS Software Seminars on IBM SW Pricing, LPARs, and IRD Voice: +1 414 332-3062 Web: www.sherkow.com ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
