Linking Service Groups

1. From the Service Group page, click Link Service Group in the left pane.
2. Enter the details of the dependency:

   

   Click the thumbnail above to view full-sized image.

   1. Select the service group that will serve as the "child" group.
   2. Select the dependency category. See Categories of Service Group Dependencies for information on service group dependencies.

   In a Soft dependency, VCS imposes minimal constraints while bringing the parent and child groups online and offline. In a Firm dependency, VCS takes the child offline before taking the parent offline when the child faults. In a Hard dependency, VCS takes the parent offline before taking the child offline when the child faults. Hard dependencies are designed for use with VVR in disaster recovery configurations where the application is in the parent group and the replication resources are in the child group.

   3. Select the relationship type and location. See Categories of Service Group Dependencies for information on service group dependencies.

   In an Online group dependency, the parent group must wait for the child group to be brought online before it can start. In an Offline group dependency, the parent group can be started only if the child group is offline on the system, and vice versa.

   In a Local dependency, an instance of the parent group depends on an instance of the child 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 group depends on one or more instances of the child group being online on any system. In a Remote dependency, an instance of the parent group depends on one or more instances of the child group being online on any system other than the system on which the parent is online.

   4. Click OK.

Unlinking Service Groups

1. From the Service Group page, click Unlink Service Group in the left pane.
2. In the Unlink Service Group dialog box:
   1. Select the name of the service group to disconnect from the dependency.
   2. Click OK.