Had initially mentioned "only reference i've found so far is that z/OS 1.4 can coexist with z/OS 1.5, thru 1.7, but nothing about parallel sysplex". In hindsight that was obviously poorly proof-read.
i had been unable to find anything stating that zOS 1.4 can co-exist in a parallel sysplex with 1.5-1.7 when zOS1.4 is no longer supported. My question should simply have been "does it make any difference to this level of co-existence if z/OS 1.4 is out of support?" i infer from Don's response that it does make a difference, in that if zOS 1.4 is unsupported as of 31/03/2007 then it is not allowed to co-exist with other environments in the sysplex that are at 1.5 thru 1.7 (let alone 1.8) Of itself, we are not concerned about running on an unsupported level of OS for 6-9 months. We are concerned about having to either (1) conform, upgrade to z/architecture, and potentially move to a Group 80 license on a z890 from our current Amdahl Group 70 license, or (2) suffer expulsion from the sysplex by no longer being part of PSLC pricing. Our desire is to stay in the sysplex on an unsupported version of zOS, continue to benefit from PSLC, and then exit in Dec-2007. Sounds as though our preferred approach is something up with which others will not put. thx for your interesting and informative replies. regards, peter ---------------------------------------------------------------------- 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
