History
AIX Version 1, Introduced in 1986 for the IBM 6150 RT Workstation, was based on UNIX System V Releases in 1 and 2.
In developing AIX, IBM and Interactive System Corporation (whom IBM contracted) also incorporated source code from 4.2 and 4.3 BSD UNIX.
IBM later produced AIX Version 3 (also known as AIX/6000), based on System V Release 3, for their POWER-based RS/6000 platform. Since 1990, AIX has served as the primary operating system for the RS/6000 series (later renamed IBM eServer pSeries, then IBM System p, and now IBM Power Systems)
AIX Version 4, introduced in 1994, added symmetric multiprocessing with the introduction of the first RS/6000 SMP servers and continued to evolve through the 1990s, culminating with AIX 4.3.3 in 1999. Version 4.1 , in a slightly modified form, was also the standard operating system for the Apple Network Server systems sold by Apple Computer to complement the Macintosh line.
A beta test version of AIX 5L for IA-64 systems was released, but according to documents released in the SCO v. IBM lawsuit, less than forty licenses for the finished Monterey Unix were ever sold before the project was terminated in 2002.
In AIX 5L, 5.1/5.2/5.3 Versions were there.
AIX 6 was announced in May 2007, and it ran as an open beta from June 2007 until the general availability (GA) of AIX 6.1 on November 9, 2007. Major new features in AIX 6.1 included full role-based access control, workload partitions (which enable application mobility), enhanced security (Addition of AES encryption type for NFS v3 and v4), and Live Partition Mobility on the POWER6 hardware.
AIX 7.1 was announced in April 2010, and an open beta ran until general availability bf AIX 7.1 in September 2010. Several new features, including better scalability, enhanced clustering and management capabilities were added. AIX 7.1 includes a new built-in clustering capability called Cluster Aware AIX.
AIX 7.2 was announced in October 2015, and released in December 2015. AIX 7.2 principal feature is the Live Kernel Update capability which allows OS fixes to replace the entire AIX kernel with no impact to applications. AIX 7.2 was also restructured to remove obsolete components. The networking component, bos.net.tcp.client was repackaged to allow additional installation flexibility. Unlike AIX 7.1 , AIX 7.2 is only supported on systems based on POWER7 or later processors.
POWER (Performance Optimization With Enhanced RISC)
by IBM
POWER ISA (1990)
POWER Series (1990)
POWER 1
POWER 2
POWER 3
POWER 4
POWER 5
POWER 6
POWER 7
POWER 8
POWER 9