This is an IBM mainframe operating system. The term MVS is used to describe an entire family of mainframe operating systems. The term "multiple virtual storage" refers to the use of multiple virtual memory areas in the operating system.
Short for Multiple Virtual Storage, the operating system for older IBM mainframes. MVS was first introduced in 1974 and continues to be used, though it has been largely superseded by IBM's newer operating system, OS/390.
Multiple Virtual Storage. An IBM operating system for processing systems consisting of one or more mainframe processors. MVS has evolved along with mainframe hardware over the years and although the term MVS is still generally used and understood the operating system has had many different names: Multiple Virtual Storage / System Product (MVS/SP) Multiple Virtual Storage / Extended Architecture (MVS/XA) Multiple Virtual Storage / Enterprise Systems Archtitecture (MVS/ESA) Operating System / 390 (OS/390) z/OS z/OS is the current name given to the 64-bit operating system.
(1) Multiple virtual storage. Implies MVS/370, the MVS/XA(TM) product, and the MVS/ESA(TM) product. (2) Multiple Virtual Storage, consisting of MVS/System Product Version 1 and the MVS/370 Data Facility Product operating on a System/370 processor.
MVS (Multiple Virtual Storage) was the most commonly used operating system on the System/370 and System/390 IBM mainframe computers. It is unrelated to IBM's other mainframe operating system called VM/CMS.