At least 4 GB of RAM is recommended for stable operation, especially if you enable features like Unified Threat Management (UTM), Zero Trust Network Access (ZTNA), or Proxy.
Baseline throughput × Derated ÷ 0.6 (safety margin) = Required datasheet throughput Look up that number in Fortinet’s Azure datasheet for the chosen instance family. fortigate vm sizing azure
Follow this process before clicking “Deploy”: At least 4 GB of RAM is recommended
In Azure Marketplace, FortiGate-VM offers based on license. The license determines the licensed throughput (e.g., 1 Gbps, 2 Gbps, 5 Gbps). The VM size must support that throughput. Zero Trust Network Access (ZTNA)
To ensure the firewall didn't become a bottleneck, Alex made sure to enable Accelerated Networking