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|Oracle Fusion Middleware Architecture Reference for Oracle Unified Directory 11g Release 1 (11.1.1)|
Replication groups are designed to support multi-data center deployments and disaster recovery scenarios. Replication groups are defined by a group ID. A group ID is a unique number that is assigned to a replicated domain on a directory server (one group ID per replicated domain). A group ID is also assigned to a replication server (one group ID for the whole replication server).
Group IDs determine how a directory server domain connects to an available replication server. From the list of configured replication servers, a directory server first tries to connect to a replication server that has the same group ID as that of the directory server. If no replication server with a compatible group ID is available, the directory server connects to a replication server with a different group ID. This selection process is described in greater detail in the following section.
For information about how to configure replication groups, see Configuring Replication Groups in Oracle Fusion Middleware Administration Guide for Oracle Unified Directory.
Note - Assured replication does not cross group boundaries. For more information, see Assured Replication.