Nothing real magical about it. First requirement is to make sure that all the required co-existence maintenance is applied and ACTIVE on all members of the sysplex. Then, assuming you have alternate sysres set, and everything is indirectly cataloged, you should be able to IPL one system at a time operating in a mixed mode. How fast you migrate is your call, but we migrate our production lpars over a period of about 6 weeks, and prior to that the upgrade has been in our sandbox and DEV environments for a few months help shake out unexpected events.
_____________________________________________________________________________________________________ Dave Jousma AVP | Manager, Systems Engineering Fifth Third Bank | 1830 East Paris Ave, SE | MD RSCB2H | Grand Rapids, MI 49546 616.653.8429 | fax: 616.653.2717 -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Mohamed Gomaa Sent: Wednesday, February 19, 2020 3:02 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Rolling Z/OS migration **CAUTION EXTERNAL EMAIL** **DO NOT open attachments or click on links from unknown senders or unexpected emails** I am looking for some white paper of redbook to help me in migration of Z/OS from v 2.2 into 2.4 in sysplex environment one LPAR at a time Thanks Mohamed Juma ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN **CAUTION EXTERNAL EMAIL** **DO NOT open attachments or click on links from unknown senders or unexpected emails** This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
