The .qcow2 (QEMU Copy On Write) format is a drive image used by the hypervisor. Unlike raw images, QCOW2 files are thin-provisioned, meaning they only take up the physical disk space actually used by the virtual machine.
The "FortiOS.qcow2" file specifically contains the FortiOS operating system—Fortinet's proprietary security OS—tailored for virtual appliances (FortiGate-VM). Key Use Cases
Automated security testing in virtualized environments. Deployment Requirements
If you use the image without a license, it operates in (available in versions 7.2.1 and later). This allows for limited functionality—low encryption strength and basic features—which is perfect for learning. For production, you must upload a .lic file to unlock the full throughput and security fabric capabilities. Why Choose Virtual over Physical?