Editing IBM AIX (section)

==History==
[[File:IBM RS6000 AIX File Servers IBM.COM 1998.jpeg|thumb|[[IBM]] [[RS/6000]] AIX file servers used for ''IBM.com'' in the 1990s]]
[[File:IBM AIX 4 Login Prompt.jpeg|thumb|AIX Version 4 console login prompt]]

Unix began in the early 1970s at [[AT&T Corporation|AT&T]]'s [[Bell Labs]] research center, running on [[Digital Equipment Corporation|DEC]] [[minicomputer]]s. By 1976, the operating system was used in various academic institutions, including [[Princeton University]], where Tom Lyon and others ported it to the [[IBM System/370|S/370]] to run as a guest OS under [[VM (operating system)|VM/370]].<ref name="johnsonport">{{cite journal |title=Portability of C Programs and the UNIX System |first1=Stephen C. |last1=Johnson |author-link1=Stephen C. Johnson |first2=Dennis M. |last2=Ritchie |author-link2=Dennis Ritchie |journal=Bell System Technical Journal |volume=57 |issue=6 |year=1978 |pages=2021–2048 |url=https://www.bell-labs.com/usr/dmr/www/portpap.pdf |doi=10.1002/j.1538-7305.1978.tb02141.x |s2cid=17510065 |access-date=August 4, 2015 |archive-date=December 18, 2021 |archive-url=https://web.archive.org/web/20211218212919/https://www.bell-labs.com/usr/dmr/www/portpap.pdf |url-status=live }}</ref> This port became [[Amdahl UTS]] from IBM's mainframe rival.<ref>{{cite web |first=Lars |last=Poulsen |title=IBM 360/370/3090/390 |date=2001 |url=http://www.beagle-ears.com/lars/engineer/comphist/ibm360.htm |access-date=November 4, 2015 |archive-date=January 3, 2018 |archive-url=https://web.archive.org/web/20180103142809/http://www.beagle-ears.com/lars/engineer/comphist/ibm360.htm |url-status=live }}</ref><ref name="UTS">{{cite web |url=http://www.telecompaper.com/news/amdahl-launches-uts-mainframe-unix-version--3646 |title=Amdahl launches UTS mainframe Unix |year=1993 |access-date=November 4, 2015 |archive-date=April 18, 2016 |archive-url=https://web.archive.org/web/20160418154402/http://www.telecompaper.com/news/amdahl-launches-uts-mainframe-unix-version--3646 |url-status=live }}</ref>

IBM's involvement with Unix began in 1979 when it assisted Bell Labs in porting Unix to the S/370 platform to be used as a [[Software build|build host]] for the [[5ESS switch]]'s software. During this process, IBM made modifications to the [[TSS/370]] Resident Supervisor to better support Unix.<ref name="att-s370-unix">{{cite journal |title=A UNIX System Implementation for System/370 |first1=W. A. |last1=Felton |first2=G. L. |last2=Miller |first3=J. M. |last3=Milner |journal=AT&T Bell Laboratories Technical Journal |year=1984 |volume=63 |issue=8 |url=https://www.bell-labs.com/usr/dmr/www/otherports/ibm.pdf |access-date=September 1, 2015 |archive-date=June 11, 2015 |archive-url=https://web.archive.org/web/20150611114653/https://www.bell-labs.com/usr/dmr/www/otherports/ibm.pdf |url-status=live }}</ref>

In 1984, IBM introduced its own Unix variant for the S/370 platform called VM/IX, developed by [[Interactive Systems Corporation]] (ISC) using Unix System III. However, VM/IX was only available as a PRPQ (Programming Request for Price Quotation) and was not a General Availability product.

It was replaced in 1985 by IBM IX/370, a fully supported product based on AT&T's Unix System V, intended to compete against UTS<ref>{{cite news |newspaper=Computerworld |date=February 18, 1985 |title=Users: New life for VM |page=11 |url=https://books.google.com/books?id=iwX8vVdMAckC&pg=PA11 |first=John |last=Gallant |access-date=February 3, 2015 |archive-date=May 17, 2015 |archive-url=https://web.archive.org/web/20150517120151/https://books.google.com/books?id=iwX8vVdMAckC&pg=PA11 |url-status=live }}</ref> and also developed by ISC.<ref name="babcock19860127">{{Cite magazine |last=Babcock |first=Charles |date=1986-01-27 |title=IBM unveils RISC system |url=https://books.google.com/books?id=33QfOHT69aMC&pg=PA1#v=onepage&q&f=true |access-date=2025-05-29 |magazine=Computerworld |pages=1,8 |volume=XX |issue=4}}</ref>

ISC also developed AIX for the [[IBM RT PC]] workstation, introduced in January 1986, based on [[UNIX System V]] Releases 1 and 2, and incorporating source code from 4.2 and 4.3 [[Berkeley Standard Distribution|BSD]] UNIX.{{r|babcock19860127}}<ref>{{cite web |url=https://notes.technologists.com/notes/2017/03/08/lets-start-at-the-very-beginning-801-romp-rtpc-aix-versions/ |title=Let's start at the very beginning… 801, ROMP, RT/PC, AIX versions |website=Notes.technologists.com |date=March 8, 2017 |access-date=November 5, 2024 }}</ref> AIX Version 2 followed in 1987 for the RT PC.<ref>{{cite journal |url=https://technologists.com/sauer/Advanced%20Interactive%20Executive%20(AIX)%20Operating%20System%20Overview.pdf |title=Advanced Interactive Executive (AIX) Operating System Overview |journal=IBM Systems Journal |volume=26 |issue=4 |year=1987 |pages=326–345 |doi=10.1147/sj.264.0326 }}</ref>

In 1990, AIX Version 3 was released for the [[IBM POWER architecture|POWER]]-based [[IBM RS/6000|RS/6000]] platform.<ref>{{cite book |last=Misra |first=Mamata |title=IBM RISC System/6000 Technology |publisher=IBM |year=1990 }}</ref> It became the primary operating system for the RS/6000 series, which was later renamed ''[[IBM eServer]] pSeries'', ''[[IBM System p]]'', and finally ''[[IBM Power Systems]]''.

AIX Version 4, introduced in 1994, added [[symmetric multiprocessing]] and evolved through the 1990s, culminating with AIX 4.3.3 in 1999. A modified version of Version 4.1 was also used as the standard OS for the [[Apple Network Server]] line by [[Apple Inc.|Apple Computer]].

In the late 1990s, under [[Project Monterey]], IBM and the [[Santa Cruz Operation]] attempted to integrate AIX and [[UnixWare]] into a multiplatform Unix for [[Intel]] [[Itanium|IA-64]] architecture. The project was discontinued in 2002 after limited commercial success.<ref name="Jury verdict 2010">{{cite web |url=http://www.groklaw.net/article.php?story=20100330152829622 |title=Novell Wins Again - Jury Rules Copyrights Didn't Go to SCO |access-date=March 30, 2010 |date=March 30, 2010 |archive-date=May 5, 2010 |archive-url=https://web.archive.org/web/20100505010433/http://www.groklaw.net/article.php?story=20100330152829622 |url-status=dead}}</ref>

In 2003, the [[SCO Group]] filed a lawsuit against IBM, alleging misappropriation of [[UNIX System V]] source code in AIX. The case was resolved in 2010 when a jury ruled that [[Novell]] owned the rights to Unix, not SCO.<ref name="Jury verdict 2010" />

[[File:AIX logo old.svg|thumb|upright=0.75|Old logo]]

AIX 6 was announced in May 2007 and became generally available on November 9, 2007. Key features included [[role-based access control]], [[workload partitions]], and [[Live Partition Mobility]].

AIX 7.1 was released in September 2010 with enhancements such as Cluster Aware AIX and support for large-scale memory and real-time application requirements.<ref>{{cite web |url=http://www-03.ibm.com/systems/power/software/aix/ |title=IBM AIX 7 Preview |publisher=IBM Corporation |date=April 16, 2010 }}</ref>