Linking service groups
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Linking service groups

Create dependencies among service groups.

See About service group dependencies.

To link two service groups with a parent-child dependency

1. In the Cluster:Groups view, in the Configuration task panel, click Link Service Groups.
2. In the Link Service Groups dialog box, specify the following details of the dependency and then click OK:
   • The service groups that you intend to serve as the parent service group and the child service group

     Use the corresponding drop-down menus for this specification.

   • The relationship type

     In a Local dependency, an instance of the parent service group depends on an instance of the child service group being online or offline on the same system, depending on the category of group dependency. In a Global dependency, an instance of the parent service group depends on one or more instances of the child service group being online on any system.

   • The dependency category

     In a Soft dependency, VCS imposes minimal constraints while bringing the parent and child service groups online and taking them offline. In a Firm dependency, VCS takes the child service group offline before taking the parent service group offline when the child service group faults. In a Hard dependency, VCS takes the parent service group offline before taking the child service group offline when the child service group faults.

     Hard dependencies are designed for use with Veritas Volume Replicator in disaster recovery configurations. In these configurations, the application is in the parent service group and the replication resources are in the child service group.