Always shut down the FortiGate operating system properly before turning off the power switch to avoid potentially catastrophic hardware problems.
To power off the FortiGate unit - web-based manager:
- Go to System > Status.
- In the System Resources widget, select Shutdown.
To power off the FortiGate unit – CLI:
Once this has been done, you can safely turn off the power switch or disconnect the power cables from the power supply.