Fractional replication can be used to replicate a subset of the attributes of all entries in a suffix or sub-suffix. Fractional replication can be configured, per agreement, to include attributes in the replication or to exclude attributes from the replication. Usually, fractional replication is configured to exclude attributes. The interdependency between features and attributes make managing a list of included attributes difficult.
Fractional replication can be used for the following purposes:
To filter content for synchronization between intranet and extranet servers
To reduce replication costs when a deployment requires only certain attributes to be available everywhere
Fractional replication is configured with the replication agreement properties repl-fractional-include-attr and repl-fractional-exclude-attr attributes. For information about these properties, see repl-agmt(5dsconf). For information about how to configure fractional replication, see Fractional Replication in Sun Java System Directory Server Enterprise Edition 6.0 Administration Guide.
Fractional replication is not backward compatible with versions of Directory Server prior to Directory Server 5.2. If you are using fractional replication, ensure that no other instances of Directory Server are prior to Directory Server 5.2.