Multiple Virtual Storage

operating system (MVS) Release 2 of OS/VS2, called MVS

because it had multiple 16 MB virtual address spaces, in

contrast to SVS. MVS ran on the IBM 390 series

mainframes. It became MVS/SP, then MVS/XA (with 31-bit

addressing) and then MVS/ESA.

MVS/Open Edition (MVS/OE), aimed at the growing open systems

market, added TCP/IP and Unix support in an MVS address

space, allowing users to run IBM, CICS-type applications,

batch applications and Unix.

MVS/ESA was repackaged as OS/390 as a marketing exercise but

it's basically the same thing.

Version: 5.1.

[Features? Dates?]

(1999-01-20)