If you have deleted a Storage Node from Management Server and want to re-add it or attach it to a new Management Server, do the following:
On the machine with Acronis Storage Node, open Command prompt: Start -> search -> type cmd.exe and press Enter.
Navigate to C:\Program Files\Acronis\RegisterAgentTool\: cd "C:\Program Files\Acronis\RegisterAgentTool"
Issue: register_agent.exe -o register -s asn -a <management server address>
where <management server address> is the IP address or hostname of the management server where the storage node should be registered.
If you want to register the Storage Node for a specific unit, you need to specify the unit ID: