Topic
  • 2 replies
  • Latest Post - ‏2012-05-09T15:13:17Z by pat.marshall
pat.marshall
pat.marshall
2 Posts

Pinned topic Double mutual failover?

‏2012-05-08T20:23:27Z |
We have 2 750's, each split into 2 LPARS. The first LPAR on each is devoted to an application and the second is devoted to the database the application uses. We have it configured like this for kernel tweeking for CPU versus I/O. We have built a virtual ethernet between the two LPARs to leverage the inherent high speed capable there.

We are trying to configure something similar to a site failover in HACMP 6.1 so if LPAR 1 on P750 A fails, both LPARs on A should failover to P750 B. The servers are in the same datacenter and are using shared storage on a V7000. Apparently, site failover will only work with non-shared storage, requiring different disk ID's.

Has anybody configured something like this? If so, can you point me in the right direction?
Updated on 2012-05-09T15:13:17Z at 2012-05-09T15:13:17Z by pat.marshall
  • j.gann
    j.gann
    20 Posts

    Re: Double mutual failover?

    ‏2012-05-09T06:05:06Z  
    you want a 4-node cluster with rg dependencies.

    Joachim Gann
  • pat.marshall
    pat.marshall
    2 Posts

    Re: Double mutual failover?

    ‏2012-05-09T15:13:17Z  
    • j.gann
    • ‏2012-05-09T06:05:06Z
    you want a 4-node cluster with rg dependencies.

    Joachim Gann
    Yes, but not the dependencies currently provided by PowerHA.

    The dependency that we are looking for is to have a resource group move to its failover node based on another resource group failing over to its secondary node.

    This dependency is not available in PowerHA.

    Example:
    Nodes: NODE1, NODE2, NODE3, NODE4
    Resource groups: RGA, RGB
    RGA starts on NODE1 and RGB starts on NODE2.
    If RGA fails over to NODE3 because of a failure on NODE1 then RGB fails over to NODE4 and vise versa.