The Failover Manager copies the contents of certain directories from the Active location to the Standby location. If a file is no longer needed, and it is deleted from the Active location, it will remain in the Standby installation area. Furthermore, if the component roles are switched, the file will show up on the original area again because of backup action by the failover. Although harmless, in time, the number of unused files may grow. Therefore, you must manually remove the unused files from both locations as needed.