Primary-Target Considerations

Primary-target replication systems are the easiest to administer because all updates are unidirectional and therefore, no data update conflicts occur. Primary-target replication systems use the ignore conflict-resolution rule. See Conflict resolution rule.

All replication systems require you to plan for capacity changes. For more information, see Preparing Data for Replication.

In the primary-target replication system, if a target database server or network connection goes down, Enterprise Replication continues to log information for the database server until it becomes available again. If a database server is unavailable for some time, you might want to remove the database server from the replication system. If the unavailable database server is the read-write database server, you must plan a course of action to change read-write capabilities on another database server.

If you require a fail-safe replication system, you should select a high-availability replication system. For more information, see High-availability replication systems.