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The dependency graph below depicts a typical replication configuration with two groups, a sample application service group (SQL Server 2000) and a replication service group. The application service group is created before creating the replication service group and has the VMDg resource on which the RVG resides.
The Volume Replicator agent configuration wizard for VCS performs certain tasks automatically when creating the replication service group.
The tasks are follows:
Creates the replication service group during which the VMDg resource is automatically moved from the application service group into the replication service group.
Creates the RVGPrimary resource in the application service group if the option to create the RVGPrimary is selected.
Establishes an online local hard service group dependency between the application service group and the replication service group, after the service groups are configured.
This online local hard dependency indicates that the replication service group (child) must first come online, before the application service group (parent) comes online. Conversely, the application service group must go offline first before the replication service group goes offline.
If the replication service group faults, the parent application service group is taken offline before the child replication service group.
