fgtvm64kvmv721fbuild1254fortinetoutkvmqcow2

For better I/O in QCOW2:

images are easy to resize via the command line or hypervisor GUI if you run out of logging space. Proxmox Support Forum Deployment Command (Example) To import this image into a KVM environment using virt-install virt-install --name FortiGate-VM --ram

The file fortinet.out.kvm.qcow2 is the virtual hard drive for the FortiGate-VM.

So the full meaning is:

The Codebreakers ran a series of rigorous tests, simulating even the most aggressive cyber attacks. To their astonishment, the Eclipse VM stood firm, its defenses impenetrable.