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z/OS
EntityQ283705· pop 22· linked from 482 articles

thumbnail|An IBM System Z10 mainframe computer on which z/OS can run.

Key facts

OS.name
z/OS
OS.logo
IBM logo.svg
OS.logo size
120px
OS.developer
IBM
OS.source_model
Closed source with open source components
OS.released
(V1R1, announced October, 2000)
OS.latest_release_version
Version 3.2 (V3R2)
OS.marketing_target
Enterprise / Mainframes
OS.programmed_in
primarily PL/X, HLASM, and C/C++
OS.prog_language
Java, C, C++, COBOL, PL/I, HLASM, FORTRAN, REXX, and many others
OS.language
English and other languages
OS.kernel_type
Monolithic (uniquely hardware-assisted)
OS.userland
MVS, UNIX System Services
OS.ui
ISPF, z/OS Management Facility
OS.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
OS.working_state
Current
OS.supported_platforms
z/Architecture
OS.package_manager
SMP/E

via Wikipedia infobox

Wikidata facts

Developer
IBM
Show 5 more facts
replaces
OS/390
publication date
2001-00-00
language of work or name
English language
product certification
Single UNIX Specification
software version identifier
3.1
Sources (2)

via Wikidata · CC0

~12 min read

Encyclopedic overview

16 sections
Contents
  • Major characteristics
  • Other features
  • 64-bit memory support
  • z/OS Encryption Readiness Technology (zERT)
  • zERT discovery
  • zERT aggregation
  • IBM zERT Network Analyzer
  • Operational data collection and analysis
  • Operational data types
  • z/OS Releases
  • See also
  • Notes
  • References
  • Citations
  • Further reading
  • External links

thumbnail|An IBM System Z10 mainframe computer on which z/OS can run.

z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions. 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 that originated in the 1960s and is still in regular use—z/OS is designed for backward compatibility.

Excerpted from Wikipedia’s “z/OS” article, available under the CC BY-SA 4.0 licence.

Gallery (2)