The Appliance OS Status table in the Centralized OS Update work flow displays the following information in the table columns.

Site Name—The SD-WAN appliance site name.

Model—The hardware model of the SD-WAN appliance.

State—The current state of the Centralized OS Update Web application or the operations currently in progress.

Active OS—The OS running currently in the Active partition of the SD-WAN appliance.

Backup OS—The OS stored in the backup partition, which is not running currently.

Transferred OS—The OS image available for installation on the SD-WAN appliance, if any.