When you create and extend a LifeKeeper resource hierarchy, the hierarchy exists on both the primary and the secondary servers. Most resource instances can be active on only one server at a time. For such resources, LifeKeeper defines a second kind of relationship called a shared equivalency that ensures that when the resource is in-service on one server, it is out-of-service on the other servers on which it is defined.

In the example below, the shared equivalency between the disk partition resource instances on each server is represented. Each resource instance will have a similar equivalency in this example.


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