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developer IBM
License (s) Proprietary
First publ. 1986
Current  version 7.2.3 (September 2018)
ancestry UNIX
↳ UNIX System V
Architecture (s) PS / 2 , S / 370 , pSeries , iSeries , POWER , PowerPC

AIX ( A dvanced I nteractive e X ecutive ) is a Unix - Operating system of the company IBM and for use in server systems or in workstations aligned.


The first version of AIX appeared in 1986. AIX was previously offered for IBM PS / 2 , IBM RT , IBM RS / 6000 , IBM PC Power Series, Motorola PowerStack and Apple Network Server , among others . Current AIX versions support only power - and PowerPC -based hardware from IBM ( pSeries or RS / 6000) and Bull (Escala).

Starting with version 4.3, the execution of GNU / Linux programs such as GIMP , KDE , Gnome and GCC is supported, but it was also generally possible to compile GNU programs from that time under older versions such as AIX 3.x, 4.1 or 4.2 and to use. With the AIX5L version, the support was also made clear by the "L" in the name.

AIX (from version 5.2L) supports dynamic repartitioning, which means that processors , memory and I / O adapters can be added or removed from the running operating system when using LPAR- compatible hardware . A restart is not necessary.

2004, Version 5.3 was introduced on the IBM eServer p5 is supported and virtualization and Micro Partitioning allows. Further innovations concern SMT support, “workload management” and a new “accounting system”. Since this version it is also possible to run AIX in a shell on the IBM iSeries in addition to i5 / OS and Linux .

AIX 6.1 was shipped in November 2007. For the first time in the history of AIX, there was an "open beta" program for this version in which anyone could participate. In addition to supporting the latest hardware, AIX 6.1 also offers additional virtualization features such as workload partitions, application and partition mobility, as well as a whole range of new security functions (Enhanced RBAC, Encrypted File System, Trusted AIX and Trusted Execution etc. .). The striking "L" for Linux affinity was removed from the product name in version 6. The aim is to illustrate the big leap from v5r3 to v6r1 (many new features, the break with the 32-bit kernel), to represent the harmonization with the Power6 processors and to dispel customers' fears about the future of AIX in coexistence with Linux .


AIX5L offers no binary compatibility with Linux (not even with PPC Linux), but source code compatibility . Thanks to native support for Linux libraries and programming interfaces , GNU / Linux programs can be run as native AIX programs after being recompiled once. IBM itself offers the most popular GNU / Linux programs as precompiled RPMs for AIX in the "AIX Toolbox for Linux Applications".

AIX includes a powerful Logical Volume Manager , JFS - and JFS2 - file systems , integrated workload manager and many other features that are offered rather than fee-based extensions in other commercial Unix systems. The mksysb tool enables (similar to make_tape_recovery from the HP-UX Ignite-UX package) a convenient and bootable system backup.

Since AIX 3, the system can be managed using the System Management Interface Tool (smit). Instead of entering command line commands directly , a menu-driven interface is used that generates and executes the appropriate commands with parameters. There are two versions available: smit ( X-Window-based ) and smitty (on the command line, the word is made up of “smit” and “tty”); both have identical options. The actions are logged (smit.log) and the commands executed are also written (smit.script). This means that you can use the generated commands in your own scripts.


IBM PS / 2

The Unix derivatives PC / IX and Xenix were previously available for the IBM PC / XT and PC / AT .

date version Notes / Supported Architectures
April 1988 1.0 AIX PS / 2 Operating System
April 1989 1.1 AIX PS / 2 Operating System Version 1.1
March 1990 1.2 AIX PS / 2 Operating System Version 1.2
March 1991 1.2.1 AIX PS / 2 Operating System Version 1.2.1
March 1993 1.3

IBM RT 6150


date version Notes / Supported Architectures
May 1986 1.0 first version for IBM RT 6150
September 1986 1.1 Support for shared libraries
17th February 1987 2.1 Version for IBM RT models 115, 125 and B25
2nd December 1988 2.2.1 last version for IBM RT 6150

Power, PowerPC

AIX / 6000

date version Notes / Supported Architectures
1990 3.1 first version for RS / 6000
1991 3.1.5
January 1992 3.2
April 1992 3.2.1 Diskless support
June 1992 3.2.2 Installation also from CD-ROM
October 1992 3.2.3 Improved support for Asian languages
September 1993 3.2.5 Support for PowerPC and Power2
March 1994 3.2.5 for N40 Special version for RS / 6000 model N40
July 1994 4.1 NIM
Late 1994 4.1.1
June 1995 4.1.3 DCE support
October 1995 4.1.4 AIX Connection
April 1996 4.2 Large file support, bonus packages
April 1997 4.2.1 NFS version 3, POP3, IMAP4
October 31, 1997 4.3 64-bit POWER, SMP
April 24, 1998 4.3.1
October 23, 1998 4.3.2 AIX NetServer
September 17, 1999 4.3.3 NIS +
May 4, 2001 5L 5.1 Linux
October 18, 2002 5L 5.2
August 13, 2004 5L 5.3 NFS version 4
November 9, 2007 6.1
September 10, 2010 7.1
5th October 2015 7.2
September 2018 7.2.3


  • Nina Johanssen, Ingolf Wittmann: AIX 4 - Basics of Administration. C and L, Vaterstetten 2000, ISBN 3-932311-09-4
  • Ingolf Wittmann (Ed.): AIX 5L - Configure, administer, use. C and L, Vaterstetten 2004, ISBN 3-936546-10-X
  • Andreas Siegert: The AIX Survival Guide , Addison-Wesley Pub. Co, Harlow 1996, ISBN 978-0201593-88-4

Web links

Individual evidence