About Riverbed Cloud Portal : Managing licenses
  
Managing licenses
The portal acts as a license server for your cloud appliances. Licenses are stored on the portal and each license is associated with a one-time token that is unique to it. You use the one-time tokens to associate a specific appliance with a specific license.
When a license expires, the appliance automatically stops the acceleration service. The license expires on the termination date regardless of whether you use it.
To view summary information about your licenses, select Licenses in the Cloud Appliances tab. The Licenses page displays information about your unused, active, and expired licenses:
Serial Number displays the license serial number. Select the serial number for more details about the license.
Model displays the Cloud Accelerator model.
The Active Licenses table displays this information:
Serial Number displays the license serial number. This number is also the appliance serial number. Select the serial number for more details about the license.
Appliance displays the user-configurable name and the type of appliance (such as ESXi or AWS).
Version displays the software version of RiOS running on the appliance. This information is displayed only for active licenses that have been provisioned through the Cloud Portal.