On the left, click on the Backup Server that you'd like to replicate data to. That backup server will be referred to as the 'destination'.
Once you've selected the destination backup server, click 'Replication' under the 'BACKUP' tab.
Take note of the Serial Number and Replication Code for the 'Destination'.
Next, click on the Backup Server that contains the data source that you'd like to replicate, then click 'Sources' at the top of the page.
Click Edit next to the Data Source that you'd like to replicate.
At the bottom of the Edit Data Source screen, check the box next to "Replicate to other Barracuda Backup Servers", then click "Add a new Backup Server".
Enter a the IP address or host-name of the 'Destination' backup server.
The address must be accessible from the source backup server. Alternate port numbers can be specified, for example 192.168.1.2:5001.
Next, enter the Serial number of the destination backup server, then enter the replication code.
Click Verify & Save to verify connectivity to the destination backup server and save the configuration. This configuration will replicate the individual data source to another Barracuda Backup Server.
Global Level Replication:
You can replicate ALL of the data on your source backup server to the destination backup server that you've just configured by going to the replication page and putting a check in the box next to "Send All Local Backups".