I don't know the official answer, but a way to guesstimate a quasi-sane answer:
Pick whatever machine was made available 3 years after OS/390 2.5 became available. Any machine available after that would most likely not have had any exploitation support provided as far back as a release 3 years old, but might have had toleration support. Add another 3 years and come up with that machine and you'll likely not have had toleration support either as far back as OS/390 2.5. That would then be the machine that you should not be at all surprised if OS/390 2.5 did not run on. Although I suppose it is possible (I do not recall) that back then we provided support "further back" when a new machine came along. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
