z/OS
64-bit operating system for IBM mainframes / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Z/OS?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
"ZOS" redirects here. For the Canadian television miniseries, see ZOS: Zone of Separation. For the airport, see Cañal Bajo Carlos Hott Siebert Airport.
z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000.[2] It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions.[NB 1] Like OS/390, z/OS combines a number of formerly separate, related products, some of which are still optional. z/OS has the attributes of modern operating systems but also retains much of the older functionality originated in the 1960s and still in regular use—z/OS is designed for backward compatibility.
This article's tone or style may not reflect the encyclopedic tone used on Wikipedia. (March 2021) |
Quick Facts Developer, Written in ...
Developer | IBM |
---|---|
Written in | primarily PL/X, HLASM, and C/C++[1] |
OS family | MVS |
Working state | Current |
Source model | Closed source with open source components. |
Initial release | March 30, 2001; 23 years ago (2001-03-30) (V1R1, announced October, 2000) |
Latest release | Version 3.1 (V3R1) / September 29, 2023; 6 months ago (2023-09-29) |
Marketing target | Enterprise / Mainframes |
Available in | English and other languages |
Package manager | SMP/E |
Platforms | z/Architecture |
Kernel type | Monolithic (uniquely hardware-assisted) |
Userland | MVS, UNIX System Services |
Default user interface | ISPF, z/OS Management Facility |
License | Proprietary monthly license charge (MLC); pricing available based on actual use (VWLC, EWLC, AWLC, EAWLC, IWP); reduced pricing options (zELC, zNALC, "Solution Edition") for many applications |
Official website | ibm |
Close