We are moving apps & file shares to the cloud & need redundancy within a budget. We use a TZ400 with one WAN circuit. First step is to add a second ISP and we are close on that. Assume no hardware budget for now so initial redundancy will be WAN circuit only. Once we have the second WAN circuit in place and I configure it in the TZ-400, what are my options regarding how to use that second circuit? Can it be active and traffic go out both connections? Active/Standby?
Then presumably after the second circuit is in place the next step is to get a second firewall and configure that for redundancy. Can those circuits both be active, or would it be active/standby?