High Availability (HA) is a redundancy design that allows two identical SonicWall Security Appliances running SonicOS to be configured to provide a reliable, continuous connection to the public Internet. One SonicWall SuperMassive is configured as the Primary unit, and an identical Security Appliance is configured as the Secondary unit. If the Primary Security Appliance fails, the Secondary Security Appliance takes over to secure a reliable connection between the protected network and the Internet. Two Security Appliances configured in this way are also known as a High Availability Pair (HA Pair).
High Availability provides a way to share SonicWall licenses between two SonicWall Security Appliances when one is acting as a high-availability system for the other. Both Security Appliances must be the same SonicWall model.
To use this feature, you must register the SonicWall Security Appliances on MySonicWall as Associated Products.