IBM VM Recovery Manager

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  • 1.  How many lpars do you have using VMRM DR in a production environment?

    Posted Tue July 08, 2025 04:01 PM

    I'm reaching out to gather some insights and experiences with VMRM DR. Specifically, I'm interested in understanding how many LPARs you've successfully managed under VMRM DR control.

    Additionally, I'm curious to know how many of these LPARs have been organized into workgroups for better resource management and efficiency.



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    Matt Geisler
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  • 2.  RE: How many lpars do you have using VMRM DR in a production environment?

    Posted Wed July 09, 2025 03:54 AM

    I've experience with only two VMRM DR production installations and number of managed AIX LPARs is below ten in both cases. I'm using workgroups for logical separation of DR steps by application workload (few LPARs per group).   



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    Igor Novotny
    Principal Consultant
    MHM Computer, a.s.
    Prague 15
    00420602369375
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    Original Message


  • 3.  RE: How many lpars do you have using VMRM DR in a production environment?

    Posted Wed July 09, 2025 06:28 AM

    Hi Matt,

    We have many customers using VMRM with LPARs ranging min 1 or 2 to 300 to 400.

    All LPARs can be under a single default_WG or can be separated into different work groups.



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    JES KIRAN CHITTIGALA
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    Original Message


  • 4.  RE: How many lpars do you have using VMRM DR in a production environment?

    Posted Thu July 10, 2025 03:15 PM

    Hi Matt, I've currently configured 78 production lpars, divided into 8 workgroups (DB2, Oracle, WebSphere Application Servers(WAS), misc (AIX jump servers and similar type VMs). We also have one application specific workgroup that contains the database and application servers specific to the application. (We did this break out because the application will soon be rehosted in AWS.)
    Each workgroup will have 10-15 AIX VM's. We have yet to set priority levels to each workgroup, but the plan is to restore databases first, followed by WAS, etc..

    In our most recent test, the 78 servers were successfully restored by VM Recovery Manager DR v1.8 in six hours and thirty-six minutes. We would like to bring that time down to four hours. We  receently migrated from Power8 frames to Power10 frames. We found that we mistakenly configured the VIOS with shared vs dedicated processors. We also have our eight year old HMCs that we wouldl ike to upgrade to CR2s in 2026.

    Between the change in processor mode on the VIOS and the new HMCs, we anticipate an decrease in recovery time. How much? We will find out.



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    Carl Gerlach
    Sr Infrastructure Design Engineer, Power Systems
    BCBSNC
    Durham, NC
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    Original Message


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