You have two options for activating a license on a single server or appliance.
Expand the Licensing section.
Activation—If your license key needs to be activated, you will see an additional Activation section at the bottom of the Licensing section. To activate your key, use one of the following procedures.
Activate online—If you have Internet access, you can activate your license and apply the activated license to the server in one step by selecting Activate Online.
You will not be able to activate a license that has already been activated.
The activation key is specific to this server. It cannot be used on any other server. If the activation key and server do not match, Double-Take will not run.
If you need to rename a server that already has a Double-Take license applied to it, you should deactivate that license before changing the server name. That includes rebuilding a server or changing the case (capitalization) of the server name (upper or lower case or any combination of case). If you have already rebuilt the server or changed the server name or case, you will have to perform a host-transfer to continue using that license.
The activation key is specific to each server and cannot be used on any other server. If the activation key and server do not match, Double-Take will not run.
You will not be able to activate a license that has already been activated.
If your Double-Take Availability license keys needs to be activated, you will have 14 days to do so. If your Double-Take DR license keys needs to be activated, you will have 14 days to do so. For Double-Take Move, license keys do not have a grace period and must be activated in order to be used, and once the license has been activated, you will have a specific number of days to complete your migration process, depending on your license type.
If you need to rename a server that already has a Double-Take license applied to it, you should deactivate that license before changing the server name. That includes rebuilding a server or changing the case (capitalization) of the server name (upper or lower case or any combination of case). If you have already rebuilt the server or changed the server name or case, you will have to perform a host-transfer to continue using that license. (Deactivation and host transfers are only available for Double-Take Availability licenses.) See Deactivating a license for complete details on deactivation and host-transfers.