We've been running parallel sysplex for more than ten years. I cannot recall a single instance where upgrading one machine in a complex required so much as an IPL on other machines, let alone POR. Assuming that you have two CFs in use, you should be able to shutdown the machine containing one CF while the sysplex continues to run on the remaining CF. Every definition should be completely dynamic. After the upgrade, the other systems should be able to rejoin the sysplex.
I can't tell exactly from the post what the concern is, but the proper sequence of steps should be nondisruptive to systems on the machine that 'stays'. If two upgrades are being performed, do them one at a time; the comments above apply in each case in sequence. . . JO.Skip Robinson Southern California Edison Company SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [EMAIL PROTECTED] Víctor de la Fuente <[EMAIL PROTECTED]> Sent by: IBM Mainframe Discussion List <[email protected]> 06/14/2006 12:20 AM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject POR needed? Hi all! We are in the process of upgrading our machines. We are in a Sysplex, with a z990 and a z900, each with a Coupling Facility for the Sysplex. The IODF is shared by both machines. We are changing z990 to z9. My doubt is if in IODF is coded the "remote" machine. I mean, when we change z990 by z9, will z900 find z9 CF? Or do we must POR z900? Note that, with the first option, we don't stop service; with the second option, there will be a stop in the service... Could any of you use your wisdom to solve my doubts? ---------------------------------------------------------------------- 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
