IBM Mainframe Forum

Hello,

Could someone tell me what is the difference between ZOS and MVS Operating Systems?

Thank you.

MVS (Multiple Virtual Storage) was first released about 1974 for System/370 machines. It evolved over time into extended architecture as the hardware evolved. Eventually it became part of OS/390, and then z/OS (which is one of IBM's latest mainframe operating system). Many of the same utilities and facilities of MVS are still available in z/OS today.