(1) In the Lightweight Directory Access Protocol (LDAP), a read-only server that contains the same data as another server. Replicas are used to back up LDAP servers and to provide faster searches by splitting requests among the main server and replica servers.
(2) A server that contains a copy of the directory or directories of another server. Replicas back up servers in order to enhance performance or response times and to ensure data integrity.
(3) A special copy of a Notes database that, because it shares a replica ID with the original database, can exchange information with it through replication.
(4) An instance of a versioned object base (VOB) located at a particular site.