On Fri, 16 Jan 2009 16:49:00 +0000, Ted MacNEIL <[email protected]> wrote:
>>We are beginning a project to upgrade three real storage constrained zOS 1.8 lpars to zOS 1.10. Does anyone know what the effect of the operating system upgrade will be related to real storage requirements? > >It's a matter of degree. >Usually, each upgrade requires more storage. But often that is only when exploiting new function. z/OS 1.8 changed the way storage was managed and some people needed some additional storage at that time, but you are already there. If there was something major, it would be documented in migration manuals or white papers. You may want to look at the introduction and release guide to see all the new functions to consider. http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/E0Z2A191/ You may also want to review the parallel sysplex test report for z/OS 1.10: http://www-03.ibm.com/systems/services/platformtest/servers/systemz_library.html http://publibz.boulder.ibm.com/epubs/pdf/e0z1p170.pdf >So, if you are in pain, today, you will be in more, tomorrow. It certainly won't get any better. If you have 10G today I doubt you would notice any subtle difference in the OS requirements. If you are living on 1G or less... perhaps. Even my sysprog sandbox LPARs have 1G now. I'm sure you have heard... memory is cheap. :-) 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
