SonicOS/X 7 High Availability
About High Availability
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.
HA is not supported on TZ series Security Appliances with wireless enabled. Stateful HA and Active/Active DPI are supported on TZ500 Series and above Security Appliances. See Active/Standby and Active/Active DPI Prerequisites.
- High Availability Terminology
- High Availability Modes
- High Availability Encryption
- Crash Detection
- Virtual MAC Address
- Dynamic WAN Interfaces with PPPoE HA
- Stateful Synchronization with DHCP
- Stateful Synchronization with DNS Proxy
- About HA Monitoring
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