Hi Jim -- I think the engines just be in the LPAR configuration as 'reserved' at the previous IPL for MVS to recognize them. PR/SM can use additional engines lowering the logical to physical ratio, but MVS only builds enough control blocks on for the number of initial engines plus the number of reserved engines.
This may have been improved with recent releases of z/OS but this was certainly an issue in the past. Regards, Al --------------------------- Al Sherkow, I/S Management Strategies, Ltd. Consulting Expertise on Capacity Planning, Performance Tuning, zPricing, LPARs, IRD and LCS Software ---------------------------------------------------------------------- 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
