Справочник Пользователя для SonicWALL 5.8.1

To use Stateful High Availability on SonicWALL NSA appliances, you must purchase a Stateful 
High Availability Upgrade license for the Primary unit. Stateful High Availability is a licensed 
service that must be activated for the Primary appliance on mysonicwall.com. The license is 
shared with the Backup unit.

License synchronization is used in a high availability deployment so that the Backup appliance 
can maintain the same level of network protection provided before the failover. To enable high 
availability, you can use the SonicOS management interface to configure your two appliances 
as a High Availability pair in Active/Idle mode.

MySonicWALL provides several methods of associating the two appliances. You can start by 
registering a new appliance, and then choosing an already-registered unit to associate it with. 
Or, you can associate two units that are both already registered. Or, you can start the process 
by selecting a registered unit and adding a new appliance with which to associate it.

Even if you first register your appliances on MySonicWALL, you must individually register 
both the Primary and the Backup appliances from the SonicOS management interface while 
logged into the individual management IP address of each appliance. This allows the 
Backup unit to synchronize with the SonicWALL license server and share licenses with the 
associated Primary appliance. When Internet access is restricted, you can manually apply 
the shared licenses to both appliances. See 

 for both procedures.

You can associate a SonicWALL security appliance with another appliance of the same model 
when you first register it, or at any time after both appliances are already registered on 
MySonicWALL. Procedures for different scenarios are provided in the following sections:

You can remove an appliance from an association at any time.