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z/OS

The z/OS welcome screen as seen through a terminal emulator. A terminal emulator, terminal application, term, or tty for short is a program that emulates a "dumb" video terminal within some other This interface is still available but Web access is common. The World Wide Web (commonly shortened to the Web) is a system of interlinked Hypertext documents accessed via the Internet.
Website IBM: z/OS operating system
Company/
developer		 IBM
OS family z/OS
Source model Mostly closed source
Latest stable release Release 9 (V1R9) / September 28, 2007
Marketing target Enterprise / Mainframes
Supported platforms z/Architecture
Kernel type Monolithic kernel (uniquely hardware-assisted)
License Proprietary monthly license charge (MLC); pricing available based on actual use (VWLC)
Working state Current
History of IBM mainframe
operating systems
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z/OS is a 64-bit operating system for mainframe computers, created by IBM. A website (alternatively web site or Web site, a back-construction from the Proper noun World Wide Web) is a collection of Web pages The software industry comprises businesses involved in the development, maintenance and publication of Computer software. A software developer is a person or organization concerned with facets of the software development process wider than design and coding a somewhat broader scope of International Business Machines Corporation abbreviated IBM and nicknamed "Big Blue", is a multinational Computer Technology Proprietary software is Computer software on which the producer has set restrictions on use private modification copying, or republishing. Events 48 BC - Pompey the Great is assassinated on orders of King Ptolemy of Egypt after landing in Egypt. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. z/Architecture, initially called ESA Modal Extensions ( ESAME) refers to IBM 's 64-bit computing architecture for a current generation In Computer science, the kernel is the central component of most computer Operating systems (OS A monolithic kernel is a kernel architecture where the entire kernel is run in Kernel space in Supervisor mode. A software license (or software licence in commonwealth usage is a Legal instrument governing the usage or redistribution of copyright protected software Proprietary software is Computer software on which the producer has set restrictions on use private modification copying, or republishing. The history of operating systems running on IBM mainframes is a notable chapter of history of mainframe operating systems, because of IBM 's long-standing position IBSYS was the tape based Operating system that IBM supplied with its IBM 7090 and This article is about the MIT Computation Center operating system BOS/360 (Basic Operating System/360 was an early IBM Operating system. TOS/360 (Tape Operating System/360 was an IBM Operating system for the System/360, used in the early days around 1965 to support the IBM The IBM Time Sharing System TSS/360 was an early Time-sharing Operating system which ran on a special model of the System/360 line of mainframes the MUSIC/SP (Multi-User System for Interactive Computing / System Product originally "McGill University System for Interactive Computing" was developed at McGill University Michigan Terminal System ( MTS) is an Operating system for the IBM System/360 and its successors that was developed jointly by the following institutions Disk Operating System/360, also DOS/360, or simply DOS, was an Operating system for IBM mainframes It was announced by IBM on the z/VSE (Virtual Storage Extended is an Operating system for IBM mainframe computers the latest one in the DOS/360 lineage, which originated in 1965 See also History of IBM mainframe operating systems OS/360, officially known as IBM System/360 Operating System, was a group of Batch processing In the History of IBM mainframe operating systems, multiprogramming with a fixed number of tasks ( MFT) was one of the three available configurations of the OS/360 Operating System/Virtual Storage 1, or OS/VS1,was an IBM mainframe computer Operating system designed to be run on IBM System/370 Multiple Virtual Storage, more commonly called MVS, was the most commonly used Operating system on the System/370 and System/390 IBM MVS/370 is the earliest currently supported version of the MVS Operating system. MVS/XA, or Multiple Virtual Storage/Extended Architecture, was a version of the IBM operating system that is now called Z/OS. MVS/ESA MVS Enterprise System Architecture Version of MVS, first introduced as MVS/SP Version 3 in February 1988 OS/390 is an IBM Operating system for the System/390 IBM mainframe computers. See also CP/CMS, History of IBM This lengthy article explores the History of CP/CMS — the historical context in which this important IBM Time-sharing CP-40 was a research precursor to CP-67, which in turn was part of IBM's then-revolutionary CP[-67]/CMS &ndash a Virtual machine / Virtual memory CP/CMS was a Time-sharing Operating system of the late 60s and early 70s known for its excellent performance and advanced features See also CP/CMS CP-67 was the control program portion of CP/CMS, a Virtual machine operating system developed for the IBM System/360-67 CP/CMS was a Time-sharing Operating system of the late 60s and early 70s known for its excellent performance and advanced features See also National CSS CP/CMS|History of CP/CMS|IBM System/360-67 VP/CSS was a Time-sharing Operating system developed by National CSS. CP/CMS|History of CP/CMS VM (often VM/CMS) refers to a family of IBM Virtual machine Operating systems used on IBM System/370 CP/CMS|History of CP/CMS VM (often VM/CMS) refers to a family of IBM Virtual machine Operating systems used on IBM System/370 CP/CMS|History of CP/CMS VM (often VM/CMS) refers to a family of IBM Virtual machine Operating systems used on IBM System/370 See also VM (operating system z/VM is the current version in IBM's VM family of Virtual machine Operating systems. IBM Airline Control Program, or ACP, was the Operating system developed by IBM beginning about 1965. TPF is an IBM Real-time operating system for mainframes descended from the IBM System/360 family including ZSeries and System TPF is an IBM Real-time operating system for mainframes descended from the IBM System/360 family including ZSeries and System A Unix-like (sometimes shortened to *nix) Operating system is one that behaves in a manner similar to a Unix system while not necessarily conforming UTS is an implementation of the UNIX Operating system for IBM mainframe (and compatible computers Linux on System z is the collective term for the Linux operating system compiled to run on IBM mainframes especially System z machines '64-bit' CPUs have existed in Supercomputers since the 1960s and in RISC -based workstations and servers since the early 1990s. An operating system (commonly abbreviated OS and O/S) is the software component of a Computer system that is responsible for the management and coordination Mainframes (often colloquially referred to as Big Iron) are Computers used mainly by large organizations for critical applications typically bulk data International Business Machines Corporation abbreviated IBM and nicknamed "Big Blue", is a multinational Computer Technology It is the successor to OS/390, which in turn combined MVS and a number of related products. OS/390 is an IBM Operating system for the System/390 IBM mainframe computers. Multiple Virtual Storage, more commonly called MVS, was the most commonly used Operating system on the System/370 and System/390 IBM

z/OS offers many of the attributes of other modern operating systems, but also retains much of the functionality originating in the 1970s and 1960s, that is still often in daily use. This article is about the Decade 1970-1979 For the Year 1970 see 1970. The 1960s decade refers to the years from the beginning of 1960 to the end of 1969 This includes CICS, IMS, DB2, RACF and SNA. CICS ( Customer Information Control System) is a Transaction server that runs primarily on IBM mainframe systems under Z/OS and Z/VSE IBM Information Management System ( IMS) is a joint Hierarchical database and Information management system with extensive Transaction processing DB2 is one of IBM 's families of Relational database management system (RDBMS (or as IBM now calls it data server software products within IBM's broader Information RACF, short for Resource Access Control Facility, is an IBM Software product Systems Network Architecture ( SNA) is IBM 's proprietary networking architecture created in 1974

z/OS also runs 64-bit Java, supports UNIX (Single UNIX Specification) APIs and applications, and communicates directly with TCP/IP. The Single UNIX Specification ( SUS) is the collective name of a family of standards for Computer Operating systems to qualify for the name " Unix The Internet Protocol Suite (commonly TCP/IP) is the set of Communications protocols used for the Internet and other similar networks A complementary IBM operating system, z/VM, provides the management of multiple virtual systems ("guests") on the same physical mainframe. CP/CMS|History of CP/CMS VM (often VM/CMS) refers to a family of IBM Virtual machine Operating systems used on IBM System/370 These new functions within z/OS and z/VM, and the Linux support, have encouraged development of new applications for mainframes. Linux on System z is the collective term for the Linux operating system compiled to run on IBM mainframes especially System z machines Many of them utilize the WebSphere Application Server for z/OS middleware. IBM WebSphere Application Server ( WAS) a software Application server, is the flagship product within IBM 's WebSphere brand Middleware is computer Software that connects Software components or applications

Because there is only one version, releases are normally called "Release n", though more formally they are "Version 1 Release n" or "V1. n".

Starting April 1, 2007, z/OS is only supported on 64-bit (z/Architecture) mainframes. Events 527 - Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. z/Architecture, initially called ESA Modal Extensions ( ESAME) refers to IBM 's 64-bit computing architecture for a current generation z/OS Release 5 was the last release to support ESA/390, a previous hardware architecture having 31-bit addressing. ESA/390 (Enterprise Systems Architecture/390 was introduced in September 1990 and is IBM 's last 31-bit -address/ 32-bit -data mainframe computing Perhaps the only computing architecture based on 31-bit addressing is one of computing's most famous and most profitable Old applications are still supported in the same binary form, whether they use 31-bit or even 24-bit addressing. The IBM System/360, announced in 1964, was an extremely popular computer system with 24-bit addressing and 32-bit general registers and arithmetic

IBM markets z/OS as a flagship[1] operating system, suited for continuous, high-volume operation with high security and stability.

A lower-cost variant of z/OS, z/OS. e, is identical in code but runs with a startup setting that prevents execution of "classic" workloads such as the COBOL and PL/I compilers. COBOL (ˈkoʊbɒl is one of the oldest programming languages still in active use PL/I ("Programming Language One" ˌpiːˌɛlˈwʌn is an imperative computer Programming language designed for scientific engineering z/OS. e was available for IBM z800, z890, and z9 BC mainframes. But z/OS. e ended with Release 8 and was withdrawn from marketing in October, 2007. [2] It is replaced by the System z New Application License Charges (zNALC), which offers the full z/OS cheaper if used to serve new applications ("new workloads").

IBM reliably makes new releases of z/OS annually. Release 9 became generally available on September 28, 2007 (first announced on August 7, 2007). Events 48 BC - Pompey the Great is assassinated on orders of King Ptolemy of Egypt after landing in Egypt. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 322 BC - Battle of Crannon between Athens and Macedon following the death of Alexander the Great. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century.

See also

References

  1. ^ IBM: Why System z for Business Integration?[1]
  2. ^ IBM System z New Application License Charges[2]

External links

On IBM mainframes running the Z/OS Operating system, Intelligent Resource Director ( IRD) is software that automates the management of CPU Linux on System z is the collective term for the Linux operating system compiled to run on IBM mainframes especially System z machines See also History of IBM mainframe operating systems OS/360, officially known as IBM System/360 Operating System, was a group of Batch processing z/VSE (Virtual Storage Extended is an Operating system for IBM mainframe computers the latest one in the DOS/360 lineage, which originated in 1965 In computing a Parallel Sysplex is a cluster of IBM mainframes acting together in a single system image usually with Z/OS. TPF is an IBM Real-time operating system for mainframes descended from the IBM System/360 family including ZSeries and System Using the various panels pop-up windows and pull-downs the System Display and Search Facility allows an IBM Z/OS mainframe user to view the status of various resources IBM SMF is a component of IBM's Z/OS for mainframe computers providing a standardised method for writing out records of activity to a file (or data set to use a Z/OS SMP/E (System Modification Program/Extended is a standard utility used in conjunction with IBM 's Z/OS Operating system.
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