Furthermore, qcow2 supports "snapshots." For security professionals and network engineers, the ability to pause a virtual machine, take a snapshot of its current state, and revert to that state if a configuration error occurs is invaluable. When testing complex routing protocols or new firewall policies, the ability to "undo" mistakes instantly via the underlying file format saves hours of troubleshooting.
For production, you must upload a .lic file obtained from Fortinet to unlock the full potential of the vCPU and RAM resources. Conclusion fortios.qcow2