On Wed, 12 Mar 2008 11:57:55 -0500, Chase, John <[EMAIL PROTECTED]> wrote:
>Hi, All, > >In preparation for z/OS 1.9 we're re-evaluating our paging subsystem >configurations. Currently we're using the same size and configuration >carried forward from "time immemorial", mainly because it still "works": >Three (3) page datasets of 2,000 cylinders each, with one "in reserve" >(available for PAGEADD) on each LPAR. > >Now we're looking at exploiting some of the newer "stuff" that uses >above-the-bar storage (DFSORT's Memory Object sorting, for starters), >and I believe our current sizing and configuration will prove inadequate >"sooner" rather than "later". Right now our Development/Test LPAR runs >on a z9BC, with 4GB central storage allocated. It does "light" to >"moderate" paging. We also run our "sandbox" there, but it's >substantially idle most of the time. The "primary" CF also lives on the >BC. > >Production runs on a z9EC with 14GB central storage (the other 2GB are >allocated to the backup CF), and the same paging subsystem configuration >as above. This LPAR currently does NO paging, but is the image we >believe would benefit most from exploiting Memory Object sorting. > >What would be a "comfortable" paging subsystem configuration, especially >for the Production LPAR, as to individual size and (especially) number >of page datasets? > John, Have you reviewed chapter 2 of the system initialization and tuning guide? http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA2E151/2.0?SHELF=IEA2BK80&DT=20080119071214 Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[EMAIL PROTECTED] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.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
