MVS Superseded
MVS
KindOperating system
Appeared1974
StatusSuperseded
CreatorIBM
FamilyOS/360
PlatformSystem/370
Sourcebitsavers.org ↗
Multiple Virtual Storage — IBM's mainframe flagship through the 70s and 80s; renamed OS/390, then z/OS, and never actually died.
1960198020002020
Descended from OS/360
Succeeded by z/OS
Ran on IBM System/360
Created by IBM
Descendants z/OS
Predecessors OS/360
MVS (Multiple Virtual Storage) replaced OS/360's MVT in 1974 — one virtual address space per user, a genuine multiprocessing OS. Its descendant z/OS still runs the world's mainframe transactions.\n\nThe MVS job control language (JCL) and TSO interactive layer persist essentially unchanged — IBM's continuity is the point.