This is the retired Shane Killen personal blog, an IT technical blog about configs and topics related to the Network and Security Engineer working with Cisco, Brocade, Check Point, and Palo Alto and Sonicwall. I hope this blog serves you well. -- May The Lord bless you and keep you. May He shine His face upon you, and bring you peace.
All firewalls I know have dual-ISP backup configuration availability. SonicWall is no different. If you have dual-ISPs, then certainly set it up. Its on the Failover and LB (Load Balancing) page. Its easy and works well.