Fortigate Vm Sizing Azure ((top)) -

Scans files and traffic on the fly without buffering the entire payload. This mode maximizes throughput for Antivirus, IPS, and Application Control.

BYOL licenses are hard-coded to a maximum number of vCPUs (e.g., FG-VM02 supports up to 2 vCPUs, FG-VM08 supports up to 8 vCPUs).

High memory availability, strong network bandwidth allocations. Sizing Examples: Standard_D4s_v5 (4 vCPUs, 16 GB RAM) Standard_D8s_v5 (8 vCPUs, 32 GB RAM) fortigate vm sizing azure

This design can also incorporate , allowing you to maintain compliance while having a backup instance ready to go.

In Azure, the performance of the FortiGate is bound by three factors: Scans files and traffic on the fly without

This architecture uses Azure Load Balancer (external and internal) to distribute traffic and detect failures using health probes. The failover time depends on the probe configuration: by default, two failed attempts measured every 5 seconds result in a maximum detection time of 15 seconds before the passive instance takes over. This design requires both FortiGate VMs to be sized to handle the full production traffic load individually.

If your network design mandates segmented DMZs or multiple internal routing zones using separate virtual NICs, you cannot select a Standard_F2sv2 (capped at 2 NICs), even if its CPU and throughput capacities are sufficient for your traffic volume. High Availability (HA) Cluster Impacts The failover time depends on the probe configuration:

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The following matrix maps FortiGate-VM licensing models to recommended Azure VM compute instances, detailing real-world expected performance baselines. FortiGate License Recommended Azure VM vCPU / RAM Max Azure Egress Bandwidth Estimated NGFW Throughput (With SSL Inspection) Max NICs Supported Standard_F2sv2 1,500 Mbps ~300 - 450 Mbps VM02 / VM02v Standard_F4sv2 4,000 Mbps ~800 - 1,200 Mbps VM04 / VM04v Standard_F8sv2 8,000 Mbps ~1.8 - 2.5 Gbps VM08 / VM08v Standard_F16sv2 16 / 32 GB 16,000 Mbps ~4.0 - 5.5 Gbps VM16 / Ultra Standard_D32ds_v5 32 / 128 GB 32,000 Mbps ~9.0 - 11.0 Gbps