from
The Free On-line Dictionary of Computing (8 July 2008)
Multiple Virtual Storage
MVS
MVS/ESA
MVS/OE
MVS/Open Edition
MVS/SP
MVS/XA
<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)