File based replication can be configured between CrushFTP servers.  CrushFTP uses a journaled file transfer system to make sure data changed on one server is changed the same way on both servers.  Conflict scenarios should be very rare and difficult to achieve.  However, we do not recommend the journaled system as the first choice method if you have a shared storage option available between servers.  The journaled system should be the secondary choice when its necessary due to geographically distributed servers.  The journaling and replication can *only* account for changes being made through CrushFTP.  No outside processes can modify files, write to files, rename files, etc.  All access needs to go through CrushFTP, or your journaled system will be out of sync requiring manual intervention to try and correct things.