Hi, I do this kind of upgrade multiple times per year. You would be surprised to know how many sites are still running OS/390 and really old versions of z/OS. You "can" run OS/390 under z/VM on the Z10, but that is well and truly just a stopgap measure and not a "production" environment suggestion. Converting from OS/390 to z/OS 1.13 (or 2.2) is a big jump, but easily doable. Depending on your other subsystems and your application dependencies, the entire upgrade should take no longer than 3 months from start to finish. It's the "extra" subsystems and the non-IBM vendor software that always cause the most problems. If you can supply more information on the software configuration you are currently running with/under OS/390, I can probably point you in the right direction on how to proceed. I am just finishing up a conversion for a County site that needed to replace their mainframe box and so had to move from z/OS 1.4 to z/OS 1.13 (and next to 2.1) so that they could get off an old z/800 and move to a z/BC12. It went very smoothly and except for the fact that their main systems programmer died partway into the conversion (natural causes), there were no big software issues at all.
You can also contact me offline if you want and we can discuss where you are software-wise and where you need to position yourself to get things done. Brian Westerman ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
