Hi, If my memory serves me right, back in the 1970s there was OS/MFT, OS/MVT, OS/VS1, and OS/VS2.
OS/VS2 morphed to OS/SVS and then OS/MVS(? Or maybe just MVS) starting in the 1980s. I worked on OS/VS1 Rel 7 back in the 79-80 time frame. I didn¹t get back to MVS till the mid 90¹s. Gary Gary L. Shiminsky Senior zVM/zVSE Systems Programmer Mainframe Technical Support Group Department of Information Technology State of New Hampshire 27 Hazen Drive Concord, NH 03301 603-271-1509 Fax 603-271-1516 Statement of Confidentiality: The contents of this message are confidential. Any unauthorized disclosure, reproduction, use or dissemination (either whole or in part) is prohibited. If you are not the intended recipient of this message, please notify the sender immediately and delete the message from your system. -----Original Message----- From: John Eells <[email protected]> Reply-To: IBM List <[email protected]> Date: Monday, March 17, 2014 at 1:51 PM To: IBM List <[email protected]> Subject: Re: Difference between MVS and z / OS systems >Helio Jose Da Silva wrote: >> Hello list, >> >> Someone can tell me the relevant differences between the MVS and z / OS >>systems? > >MVS was the prior name of what has become z/OS. What was started out as >MVS in 1974 was renamed to: > >MVS/SP Version 1 >MVS/XA Version 2 in 1981 >MVS/ESA Version 3 (1988), Version 4 (1991), and Version 5 (1994) >OS/390 (1996) >z/OS (2000) > >Along the way have come a plethora of new and enhanced functions. There >are more differences than there is time to list them. However, we still >call the "base control program" (BCP) "MVS" in many contexts, such as in >the names of various z/OS books, to differentiate it from the other >70-ish parts ("elements") of z/OS. > >-- >John Eells >z/OS Technical Marketing >IBM Poughkeepsie >[email protected] > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
