# Enable or disable user database replication

You can enable or disable the replication of the Management Server’s internal LDAP database to a Engine or a Master Engine.

##

The Management Server's internal LDAP database stores accounts for end users for authentication purposes. Engines have a local replica of the Management Server’s internal LDAP database. By default, all changes are immediately replicated from the Management Server’s internal LDAP database to the local replicas on Engines.

Master Engines have one combined local replica of the Management Server’s internal LDAP database for each Domain in which a Virtual Engine has users in the internal LDAP database. By default, changes are replicated from the Management Server’s database to the local replicas on the Master Engines. The information that is replicated to Master Engines depends on the User Authentication configuration of the Virtual Engines.

Note: Changing the replication of the Management Server’s internal LDAP database for a Master Engine also changes the replication of the Management Server’s internal LDAP database for all Virtual Engines hosted by the Master Engine.

For more details about the product and how to configure features, click Help or press F1.

## Steps

1. Select Engine.
2. Right-click the Security Engine, then select Options.
3. Select or deselect User DB Replication.