Delta File Transfer requires the use of the DLO maintenance server. The maintenance server manages the deletion of previous delta revisions from storage locations. The maintenance server is only required when the Delta File Transfer option is enabled, but it is installed by default when DLO is installed.If the media server is also the Storage Location host, then no additional steps are required to configure the maintenance server.
Only one maintenance server is required. However, in large installations it may be more efficient to have one maintenance server for each Storage Location host (File Server).