Directory Server supports multi-master replication over WANs, enabling multi-master replication configurations across geographical boundaries in international, multiple data center deployments.
The replication protocol provides full asynchronous support, window and grouping mechanisms, and support for compression. These features render multi-master replication over WAN a viable deployment possibility.
In a multi-master replication over WAN configuration, all instances of Directory Server separated by a WAN must support multi-master replication over WANs.
The group mechanism and window mechanism can be used to group changes rather than send them individually. The group mechanism and window mechanism can also be used to specify a number of requests that can be sent to the consumer without the supplier waiting for an acknowledgement from the consumer.
For information about how to adjust the group size and window size, see Configuring Network Parameters in Sun Java System Directory Server Enterprise Edition 6.1 Administration Guide.
Replication compression helps to streamline replication flow and avoid bottlenecks caused by limited bandwidth.