Fortigate Vm Sizing Azure Jun 2026

| VM Size | Max Network Bandwidth (Gbps) | FortiGate Realistic Inspection Throughput | |---------|------------------------------|--------------------------------------------| | D2s v3 | ~1.5 Gbps | ~0.8 Gbps (with basic firewall) | | D4s v3 | ~3.0 Gbps | ~1.5-2 Gbps (with IPS) | | D8s v3 | ~6.0 Gbps | ~3 Gbps (with SSL inspection) | | D16s v3 | ~12.0 Gbps | ~5-6 Gbps (mixed traffic) |

The is the gold standard for high-performance FortiGate deployments. Powered by Intel Xeon Platinum processors, these VMs offer high clock speeds, making them ideal for CPU-heavy tasks like pattern matching in IPS and Threat Protection.

For production >2 Gbps, always choose BYOL with a 3-year commitment. For variable workloads under 1 Gbps, PAYG works but watch your monthly bill.

Starting with FortiOS 7.4.0, some workloads that depend on the extended IPS database require the underlying VM to be sized to 8 vCPUs or more to continue using those IPS signatures. If your security policy relies heavily on extended IPS, factor this into your sizing model even if throughput requirements appear lower. fortigate vm sizing azure

Proper sizing of the FortiGate VM is essential to ensure that it can handle the required network traffic and security workloads. Undersizing the VM can lead to performance issues, packet loss, and decreased security effectiveness, while oversizing can result in unnecessary costs. Therefore, it's crucial to carefully evaluate your Azure environment and security requirements to determine the optimal FortiGate VM size.

Balanced workloads or when more RAM is needed for heavy logging/reporting. Standard_D2s_v5 , Standard_D4s_v5 3. Licensing vs. Azure Size

| | Best For | |---|---| | BYOL | Long-term enterprise deployments requiring maximum flexibility in VM sizing, VDOM support, and cost predictability | | PAYG | Short-term projects, proof of concepts, and environments where you want to avoid upfront license commitments | | VM Size | Max Network Bandwidth (Gbps)

FortiGate-VM supports several Azure instance families, each suited for different use cases: Instance Family Best Use Case Notable Limits High-performance firewalling, IPS, and SSL inspection.

While a FortiGate-VM can technically run on 1 vCPU and 2 GB of RAM, these specs are generally reserved for evaluation or light testing.

FortiGate VM Sizing in Azure: Complete Architectural Guide Deploying a Fortinet FortiGate VM in Microsoft Azure requires a balance between security inspection, performance, and cost. Unlike hardware appliances with dedicated Application-Specific Integrated Circuits (ASICs), virtual firewalls rely entirely on cloud-allocated CPU and RAM. Sizing your FortiGate VM incorrectly can lead to high latency, dropped packets, or unnecessary infrastructure spend. For variable workloads under 1 Gbps, PAYG works

While less common for standard firewalls, the provides massive memory allocations per vCPU.

Mastering FortiGate VM Sizing in Microsoft Azure: A Comprehensive Engineering Guide

As organizations increasingly move their workloads to the cloud, ensuring the security and integrity of their infrastructure becomes a top priority. FortiGate, a leading network security appliance, offers a virtual machine (VM) solution that can be deployed in Azure to provide robust security features. However, to ensure optimal performance and efficiency, it's crucial to properly size the FortiGate VM for your Azure environment. In this article, we'll delve into the key considerations and best practices for FortiGate VM sizing in Azure.