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Starting with z/OS version 2 release 3, code may be placed and executed above the 2 GB "bar". However, very few z/OS services may be invoked from above the "bar". Memory is obtained as "Large Memory Objects" in multiples of 1 MB (with the expectation that applications and middleware will manage memory allocation within these large pieces).
z/VM is the current version in IBM's VM family of virtual machine operating systems. First released in October 2000, [ 2 ] z/VM remains in active use and development as of 2024 [update] . [ 3 ]
Older versions of z/OS, z/VSE, and z/VM continued to support 32-bit systems; z/OS version 1.6 and later, z/VSE Version 4 and later, and z/VM Version 5 and later require z/Architecture. Linux also supports z/Architecture with Linux on IBM Z .
It took some time for a single OS to fully utilize the z990, as the z/OS and z/VM only gained support for 24 processors in September 2004, and for 32 processors in June 2005 for the z/OS and June 2007 for the z/VM. [45] [46] In May 2004, the z800 was succeeded by the z890. The memory capacity and the core count were left unchanged from the z800 ...
In 1986, IBM introduced AIX Version 1 for the IBM RT PC workstation. It was based on UNIX System V Releases 1 and 2, incorporating source code from 4.2 and 4.3 BSD UNIX. [14] AIX Version 2 followed in 1987 for the RT PC. [15] In 1990, AIX Version 3 was released for the POWER-based RS/6000 platform. [16]
IBM WebSphere Application Server for z/OS is one of the platform implementations of IBM's WebSphere Application Server family. The latest version is Version 9.0. [1]The open standard interfaces supported by WAS are common across all platforms provided the version and release levels are aligned.
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An earlier version of the code that would become DB2 LUW (Linux, Unix, Windows) was part of an Extended Edition component of OS/2 called Database Manager. IBM extended the functionality of Database Manager a number of times, including the addition of distributed database functionality by means of Distributed Relational Database Architecture ...