In normal operating conditions, the bunker acts in a Secondary role, and receives writes from the Primary. Like other Secondaries, the bunker Secondary has replication attributes, which determine the behavior of replication between the Primary and the Secondary. When you add a bunker to an RDS, it is configured as a Secondary and the replication attributes are set to the default values. For some of the attributes, the default values for a bunker Secondary are different than the default values for a standard Secondary.
To use values other than the defaults, change the replication settings between the Primary and the bunker Secondary using the vradmin set command. Each attribute setting could affect replication and must be set up with care. The replication attributes for a bunker Secondary are the same as the replication attributes for a standard Secondary.
See About replication settings for a Secondary.
The following table provides an overview of the replication attributes in the bunker scenario, including the default settings for a bunker Secondary.