You can add devices singly or you can add multiple devices all at once. Although they function in the same way, you cannot select the device discovery method and enter a device description when adding multiple devices. Auto Discover is the default method for adding multiple devices.

For an existing device, use the Add Device function and follow the steps in the add device wizard. Adding an existing device will not result in an immediate connection to the device. Device connection happens only when you successfully resynchronize the device.

Adding an operating FortiGate HA cluster to the Device Manager is similar to adding a standalone device. For more information, see “Configuring High Availability”.