Ensure IT Service Continuity through enterprise-level redundancy and recovery features

The high-end redundancy features of Dell SonicWALL E-Class Network Security Appliance (NSA), NSA and TZ Series appliances provide small-, mid- and large-size organisations with business continuity and disaster recovery at levels of reliability usually reserved for larger enterprises. Advanced features include active-passive failover for distributing or load sharing outbound WAN traffic, and hardware failover for automatically activating a passive appliance to assume responsibility for forwarding traffic. Failover even extends to the VPN, allowing remote branches to connect to a secondary gateway if the primary gateway is unavailable.


IT Service Continuity

IT Service Continuity is ensured through Dell SonicWALL WAN redundancy features, hardware failover and load balancing. With six configurable Ethernet interfaces, the NSA Series is ideally suited for complex networks requiring a higher level of continuity features.

Hardware Failover

When in hardware failover mode, if the active unit fails, the passive unit will automatically detect and assume responsibility for forwarding traffic to provide a greater level of reliability and redundancy.

VPN Gateway Failover

The Dell SonicWALL appliance also provides support for remote/branch offices to seamlessly establish a VPN connection to a secondary gateway at the corporate headquarters, should the connection to the primary gateway be terminated. This allows for continuous uptime.

WAN ISP Failover and Load Balancing

One of the user-assigned ports can be designated as a secondary WAN port, ensuring highly reliable network connectivity and robust performance. This secondary WAN port can be configured in active-passive failover mode, providing a highly efficient method for distributing or load sharing outbound WAN traffic. Load balancing is available on all the NSA Series and TZ Series appliances.

Automated Failover and Failback

Failover and failback technologies are integrated into TZ, NSA and E-Class NSA Series appliances. These technologies are designed to ensure continuous uptime for IPSec VPN tunnels by automatically failing over to an alternate WAN connection should the broadband connection fail. Once the broadband is re-established, the appliance fails back to the original WAN connection, providing the best connection speed possible.

3G/4G Wireless Broadband Networking

By leveraging recent advances in 3G/4G wireless broadband technologies, Dell SonicWALL firewall appliances enable organisations to use the Internet even in locations where wired broadband access is unavailable or requires time-consuming installation and provisioning. This allows businesses to establish high-speed access rapidly for seasonal kiosks, mobile point-of-sale stations, portable ATM machines, disaster recovery networks, construction sites and more — as either a backup to a wired line or as a primary Internet connection.

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