AIX wpar's ?

Posted on 2012-09-09
Last Modified: 2012-09-10
Hi wpm,

I was wondering if I can configure wpars on my AIX 5.3 by having a power4 cpu?

How about if I upgrade to AIX 6?

Do I need any special licence for WPAR's like needed on PowerVM?

Due to my understanding, WPARs are for AIX like zones are for Solaris?

Thank you!
Question by:g0all
    LVL 68

    Accepted Solution


    1) Workload partitions have been introduced with AIX 6.1.
    No chance to run WPARs on AIX 5.3 regardless of processor architecture.

    2) Upgrading to AIX 6.1 will allow using WPARs.

    3) Workload partitions are part of AIX 6.1 and up, there is no special license.
    There is a separately licensed feature "AIX 5.3 Workload partitions for AIX 7" which
    allows for running AIX 5.3 in a WPAR under AIX 7. This is meant for applications which require AIX 5.3 to run and cannot be migrated to a higher AIX version.

    4) In a way, yes. Let me quote the AIX 6.1 Release Notes:
    Workload Partitions
    Workload partitions (WPARs) provide a virtualized operating system environment within a single instance of the AIX operating system. WPARs secure and isolate the environment for the processes and signals that are used by enterprise applications. WPARs complement other AIX virtualization technologies. WPARs can improve efficiency by reducing the number of system images to maintain, providing easy setup and management, and high system utilization through server consolidation. There are two type of WPARs supported:

    - System WPARs are autonomous virtual system environments with their own private file systems, users and groups, resource controls, login, network space, and administrative domain. A system WPAR shares the kernel with the global AIX environment in which it runs, and can share or have its own copies of the system /usr and /opt file systems.
    - Application WPARs provide an environment for isolation of applications and their resources. The WPAR application inherits all resources and execution environments from the global environment. (Appendix A).

    And here are the docs:

    LVL 1

    Author Closing Comment

    Excellent as usual, wmp. Thank you.

    Sorry for delaying the points, but I don't receive e-mail notifications anymore, not sure why.
    LVL 1

    Author Comment

    My question would be, inside a LPAR can I have multiple WPAR? Is there a limit?
    LVL 68

    Expert Comment

    Of course you can have WPARs inside an LPAR.

    The number of WPARs that can be created is basically constrained only by the availability of global (LPAR) memory (and disk space, of course), but only 8192 WPARs can be active at any time.

    The number of  resource-controlled WPARs ("mkwpar -R ...", "chwpar -R ...") is limited to 8192, whether they're active or not.
    LVL 1

    Author Comment

    Thanks wmp,

    Let's move here please:

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