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ting system in march 2010 a jury returned a verdict finding that novell not the sco group owns the rights to unix 16 old logo 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 of 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 is able to organize multiple lpars through the multipath communications channel to neighboring cpus enabling very high speed communication between processors this enables multi terabyte memory address range and page table access to support global petabyte shared memory space for aix power7 clusters so that software developers can program a cluster as if it were a single system without using message passing i e semaphore controlled inter process communication aix administrators can use this new capability to cluster a pool of aix nodes by default aix v7 1 pins kernel memory and includes support to allow applications to pin their kernel stack pinning kernel memory and the kernel stack for applications with real time requirements can provide performance improvements by ensuring that the kernel memory and kernel stack for an application is not paged out 17 aix 7 2 18 was announced in october 2015 and released in december 2015 the principal feature of aix 7 2 is the live kernel update capability which allows os fixes to replace the entire aix kernel with no impact to applications by live migrating workloads to a temporary surrogate aix os partition while the original os partition is patched 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 supported hardware platforms edit ibm rt pc edit the original aix sometimes called aix rt was developed for the ibm rt pc workstation by ibm in conjunction with interactive systems corporation who had previously ported unix system iii to the ibm pc for ibm as pc ix 19 according to its developers the aix source for this initial version consisted of one million lines of code 20 installation media consisted of eight 1 2m floppy disks the rt was based on the ibm romp microprocessor the first commercial risc chip this was based on a design pioneered at ibm research the ibm 801 one of the novel aspects of the rt design was the use of a microkernel called virtual resource manager vrm the keyboard mouse display disk drives and network were all controlled by a microkernel one could hotkey from one operating system to the next using the alt tab key combination each os in turn would get possession of the keyboard mouse and display besides aix v2 the pick os also included this microkernel much of the aix v2 kernel was written in the pl 8 programming language which proved troublesome during the migration to aix v3 citation needed aix v2 included full tcp ip networking as well as sna and two networking file systems nfs licensed from sun microsystems and distributed services ds ds had the distinction of being built on top of sna and thereby being fully compatible with ds on ibm mainframe systems clarification needed and on midrange systems running os 400 through ibm i for the graphical user interfaces aix v2 came with the x10r3 and later the x10r4 and x11 versions of the x window system from mit together with the athena widget set compilers for fortran and c were available ibm ps 2 series edit aix ps 2 1 3 console login aix ps 2 also known as aix 386 was developed by locus computing corporation under contract to ibm 19 aix ps 2 first released in october 1988 21 ran on ibm ps 2 personal computers with intel 386 and compatible processors aix ps 2 1 3 aixwindows desktop the product was announced in september 1988 with a baseline tag price of 595 although some utilities like uucp were included in a separate extension package priced at 250 nroff and troff for aix were also sold separately in a text formatting system package priced at 200 the tcp ip stack for aix ps 2 retailed for another 300 the x window system package was priced at 195 and featured a graphical environment called the aixwindows desktop based on ixi s x desktop 22 the c and fortran compilers each had a price tag of 275 locus also made available their dos merge virtual machine environment for aix which could run ms dos 3 3 applications inside aix dos merge was sold separately for another 250 23 ibm also offered a 150 aix ps 2 dos server program which provided file server and print server services for client computers running pc dos 3 3 24 the last version of ps 2 aix is 1 3 it was released in 1992 and announced to add support for non ibm non microchannel computers as well 25 support for ps 2 aix ended in march 1995 26 ibm mainframes edit in 1988 ibm announced aix 370 27 also developed by locus computing aix 370 was ibm s fourth attempt to offer unix like functionality for their mainframe line specifically the system 370 the prior versions were a tss 370 based unix system developed jointly with at t c 1980 12 a vm 370 based system named vm ix developed jointly with interactive systems corporation c 1984 citation needed and a vm 370 based version of tss 370 citation needed named ix 370 which was upgraded to be compatible with unix system v citation needed aix 370 was released in 1990 with functional equivalence to system v release 2 and 4 3bsd as well as ibm enhancements with the introduction of the esa 390 architecture aix 370 was replaced by aix esa 28 in 1991 which was based on osf 1 and also ran on the system 390 platform this development effort was made partly to allow ibm to compete with amdahl uts citation needed unlike aix 370 aix esa ran both natively as the host operating system and as a guest under vm aix esa while technically advanced had little commercial success partially because citation needed unix functionality was added as an option to the existing mainframe operating system mvs as mvs esa sp version 4 release 3 openedition 29 in 1994 and continued as an integral part of mvs esa sp version 5 os 390 and z os with the name eventually changing from openedition to unix system services ibm also provided openedition in vm esa version 2 30 through z vm ia 64 systems edit as part of project monterey ibm released a beta test version of aix 5l for the ia 64 itanium architecture in 2001 but this never became an official product due to lack of interest 15 apple network servers edit the apple network server ans systems were powerpc based systems designed by apple computer to have numerous high end features that standard apple hardware did not have including swappable hard drives redundant power supplies and external monitoring capability these systems were more or less based on the power macintosh hardware available at the time but were designed to use aix versions 4 1 4 or 4 1 5 as their native operating system in a specialized version specific to the ans called aix for apple network servers aix was only compatible with the network servers and was not ported to standard power macintosh hardware it should not be confused with a ux apple s earlier version of unix for 68k based macintoshes power isa powerpc power isa based systems edit aix rs 6000 servers running ibm com in early 1998 aix rs 6000 servers running ibm com in early 1998 the release of aix version 3 sometimes called aix 6000 coincided with the announcement of the first power1 based ibm rs 6000 models in 1990 aix v3 innovated in several ways on the software side it was the first operating system to introduce the idea of a journaling file system jfs which allowed for fast boot times by avoiding the need to ensure the consistency of the file systems on disks see fsck on every reboot another innovation was shared libraries which avoid the need for static linking from an application to the libraries it used the resulting smaller binaries used less of the hardware ram to run and used less disk space to install besides improving performance it was a boon to developers executable binaries could be in the tens of kilobytes instead of a megabyte for an executable statically linked to the c library aix v3 also scrapped the microkernel of aix v2 a contentious move that resulted in v3 containing no pl 8 code and being somewhat more pure than v2 other notable subsystems included iris gl a 3d rendering library the progenitor of opengl iris gl was licensed by ibm from sgi in 1987 then still a fairly small company which had sold only a few thousand machines at the time sgi also provided the low end graphics card for the rs 6000 capable of drawing 20 000 gouraud shaded triangles per second the high end graphics card was designed by ibm a follow on to the mainframe attached ibm 5080 capable of rendering 990 000 vectors per second phigs another 3d rendering api popular in automotive cad cam circles and at the core of catia full implementation of version 11 of the x window system together with motif as the recommended widget toolkit and window manager network file systems nfs from sun afs the andrew file system and dfs the distributed file system ncs the network computing system licensed from apollo computer later acquired by hp dps on screen display system this was notable as a plan b in case the x11 motif combination failed in the marketplace however it was highly proprietary supported only by sun next and ibm this cemented its failure in the marketplace in the face of the open systems challenge of x11 motif and its lack of 3d capability as of 2015 update aix runs on ibm power system p system i system p5 system i5 eserver p5 eserver pseries and eserver i5 server product lines as well as ibm bladecenter blades 31 and ibm pureflex compute nodes in addition aix applications can run in the pase subsystem under ibm i power7 aix features edit aix 7 1 fully exploits systems based on power7 processors include the active memory expansion ame feature which increases system flexibility where system administrators can configure logical partitions lpars to use less physical memory for example an lpar running aix appears to the os applications to be configured with 80 gb of physical memory but the hardware actually only consumes 60 gb of physical memory active memory expansion is a virtual memory compression system which employs memory compression technology to transparently compress in memory data allowing more data to be placed into memory and thus expanding the memory capacity of power7 systems using active memory expansion can improve system use and increase a system s throughput aix 7 automatically manages the size of memory pages used to automatically use 4 kb 64 kb or a combination of those page sizes this self tuning feature results in optimized performance without administrative effort power8 aix features edit aix 7 2 exploits power8 hardware features including accelerators and eight way hardware multithreading power9 aix features edit aix 7 2 exploits power9 secure boot technology 32 versions edit the default login banner for aix 5 3 on powerpc version history edit version 33 release date 2 end of support date 34 old version no longer maintained 5l may 4 2001 21 years ago 2001 05 04 april 30 2012 10 years ago 2012 04 30 old version no longer maintained 5 3 august 13 2004 18 years ago 2004 08 13 old version no longer maintained 6 1 november 9 2007 14 years ago 2007 11 09 april 30 2017 5 years ago 2017 04 30 older version yet still maintained 7 1 september 10 2010 12 years ago 2010 09 10 april 30 2023 6 months time 2023 04 30 older version yet still maintained 7 2 december 1 2015 6 years ago 2015 12 01 tba current stable version 7 3 december 10 2021 10 months ago 2021 12 10 tba legend old version older version still maintained latest version latest preview version future release power powerpc releases edit aix v7 3 december 10 2021 35 aix v7 2 october 5 2015 18 live update for interim fixes service packs and technology levels replaces the entire aix kernel without impacting applications flash based filesystem caching cluster aware aix automation with repository replacement mechanism sriov backed vnic or dedicated vnic virtualized network adapter support rdsv3 over roce adds support of the oracle rdsv3 protocol over the mellanox connect roce adapters requires power7 or newer cpus aix v7 1 september 10 2010 36 support for 256 cores 1024 threads in a single lpar the ability to run aix v5 2 or v5 3 inside of a workload partition an xml profile based system configuration management utility support for export of fibre channel adapters to wpars vios disk support in a wpar cluster aware aix aix event infrastructure role based access control rbac with domain support for multi tenant environments aix v6 1 november 9 2007 37 workload partitions wpars operating system level virtualization live application mobility live partition mobility security role based access control rbac aix security expert a system and network security hardening tool encrypting jfs2 filesystem trusted aix trusted execution integrated electronic service agent for auto error reporting concurrent kernel maintenance kernel exploitation of power6 storage keys probevue dynamic tracing systems director console for aix integrated filesystem snapshot requires power4 or newer cpus aix 6 withdrawn from marketing effective april 2016 and from support effective april 2017 38 aix 5l 5 3 august 13 2004 39 end of support april 30 2012 nfs version 4 advanced accounting virtual scsi virtual ethernet exploitation of simultaneous multithreading smt micro partitioning enablement power5 exploitation jfs2 quotas ability to shrink a jfs2 filesystem kernel scheduler has been enhanced to dynamically increase and decrease the use of virtual processors aix 5l 5 2 october 18 2002 39 end of support april 30 2009 40 ability to run on the ibm bladecenter js20 with the powerpc 970 minimum level required for power5 hardware mpio for fibre channel disks iscsi initiator software participation in dynamic lpar concurrent i o cio feature introduced for jfs2 released in maintenance level 01 in may 2003 41 aix 5l 5 1 may 4 2001 end of support april 1 2006 42 ability to run on an ia 64 architecture processor although this never went beyond beta 43 minimum level required for power4 hardware and the last release that worked on the micro channel architecture 64 bit kernel installed but not activated by default jfs2 ability to run in a logical partition on power4 the 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