Workload Partitions: Difference between revisions

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{{Short description|OS-level virtualisation}}

AIX Workload partitions (WPARs) are a software implementation of [[operating system-level virtualization]] technology introduced in the [[IBM|IBM's]] [[IBM AIX (operating system)| AIX 6.1 operating system]] that provides application environment isolation and resource control.

{{onesource|date=April 2016}}

'''IBM AIX Workload partitionsPartitions''' ('''WPARs''') are a software implementation of [[OS-level virtualization|operating system-level virtualization]] technology introduced in the [[IBM|IBM's]] [[IBM AIX (operating system)|IBM AIX 6.1 operating system]] that provides application environment isolation and resource control.

WPARs are software partitions that are created from, and share the resources of, a single instance of the AIX OS. WPARs can be created on any [[systemIBM Power Systems]] or [[IBM System p]] hardware that supports AIX version 6.1 orand higher versions.<ref>[https://www.theregister.com/2012/02/17/ibm_aix_5_3_i5_v5r4_support/ "IBM puts AIX 5.3 on extended life support"] ''The Register''. Retrieved 2024-04-17.</ref> There are twothree kinds of WPARs,: System WPARs; Application WPARs; and ApplicationVersioned WPARs.

==System WPAR==

A system WPAR behaves as a complete installation of AIX.

==Application WPAR==

Application WPARs are light weightlightweight environments used for isolating and executing a single application process.

==Versioned WPAR==

A WPAR which contains an instance of either AIX 5.2 or AIX 5.3. Versioned WPARs are only supported in AIX 7.1 and later LPARs.

==Mobility==

WPAR mobility is an extension to WPARs that provides the ability to move a running workload from one physical machine to another. Both System and Application WPARs can be moved from one machine to another. To continue having access to the same files before/after mobility; the [[Unix_directory_structureUnix directory structure|filesystems]] of a mobile WPAR must either be stored in a disk or NFS mounted (both of which should be shared and accessible from all the machines where WPAR is being moved to).

The feature can be extremely helpful in the following scenarios :

* During hardware upgrades or other planned outages.

* To transfer the load of the running application to another machine.

==See also==

*[[Operating system-level virtualization]]

*[[LPAR|Logical Partitioning]] (LPAR)

*[[Dynamic Logical Partitioning]] (DLPAR)

*[[FreeBSD jail]]

*Fujitsu [[XPAR]]

*[[Sun Microsystems|SUN]] [[Dynamic Domains]]

*[[Sun Microsystems|SUN]] [[LDOM]]

*[[Solaris Containers]]

*[[IBM]] [[Workload Manager]]

*[[OpenVZ]]

*[[Linux-VServer]]

==References==

{{reflist}}

==External links==

*[http://www.ibm.com/developerworks/aix/library/au-workload/index.html Basic management of Workload Partitions in AIX], IBM developersworksdeveloperworks

*[http://www.ibm.com/developerworks/aix/library/au-wpar61aix/index.html Workload Partitioning (WPAR) in AIX 6.1], IBM developersworksdeveloperworks

*[http://www.rootvg.net/content/category/6/49/169/ All about WPAR]

{{Virtualization software}}

[[Category:Virtualization software|Dynamic Logical Partitioning]]

[[Category:IBMUNIX operatingSystem systemsV]]

[[Category:IBM AIX]]

{{DEFAULTSORT:Aix}}

[[Category:SystemPower V|IBMISA Aixoperating systems]]

[[Category:IBM operating systems]]

[[Category:Power operating systems]]

[[Category:PowerPC operating systems]]

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