Think about high availability? How stringent are your requirements? What would device reboot (minutes downtime), tripped circuit breaker (minutes to hours down), or hardware failure (days down or more) mean? Are you operating single or multiple installations? What is the availability of a replacement device? Based on that - are you considering a single device, a single device with a dual power supply, or a HA pair of devices? (We have quite good experience with a HA pair of 60F's.) Here are some ideas based on our experience:
Like Hillstone, FortiGate firewalls are a line with a huge range of capabilities.
