In Intellect one can configure the synchronization of the video archive of the main and backup Servers. In this case, after restoring the main Server, the video archive will be transferred from the backup Server using the Long-term archive module.
To use the archive synchronization mechanism create a Long-term archive object under the same Computer object as the Failover service object.

Cooperation with the Failover service is to be enabled on the settings panel of the Long-term archive (see Enabling cooperation of Long-term archive with Failover service).
Configure synchronization on the main Server as follows:

1. Go to the settings panel of the Computer object corresponding to the main Server.
   
2. Go to the Archive synchronization tab (1).
3. Configure the list of cameras the archive of which is be synchronized when restoring the main Server:
   1. Select the camera ID in the Number dropdown list (2).
   2. Select the camera name in the Name dropdown list (3).
   3. In the Long-term archive dropdown list select the name of the Long-term archive object configured to cooperate with the Failover service and located on the backup Server where the selected camera is transferred to when the main Server fails (4).  
   4. Repeat steps a-c for all required cameras.
   5. Click the Apply button (5).

The synchronization of main and backup Servers is now completed.