Workload Partitions: Difference between revisions

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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.

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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 [[system p]] hardware that supports AIX 6.1 or higher versions. There are two kinds of WPARs, System WPARs and Application WPARs.

==System WPAR==

A system WPAR behaves as a complete installation of AIX.

==Application WPAR==

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

==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 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 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]]

*[[Solaris Containers]]

*[[OpenVZ]]

*[[Linux-VServer]]

==External links==

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

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

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

{{Virtualization}}

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

[[Category:UNIX System V|IBM Aix]]

[[Category:IBM operating systems]]

[[Category:Power operating systems]]

[[Category:PowerPC operating systems]]