What defines unregistered devices when connected to FortiAnalyzer?

Unregistered devices connected to FortiAnalyzer are defined as devices that are not authorized to store logs. This means that these devices have not yet been fully integrated into the FortiAnalyzer management system and do not have the necessary permissions or configurations to send or store log data.

In the context of network management and security monitoring, ensuring that only authorized devices can store logs is critical for maintaining data integrity and security. Devices that have not completed the registration process remain in a state where their log data could not be trusted, as they have not been properly authenticated or verified against the organizational policies set in FortiAnalyzer.

The other options highlight different stages or conditions related to device management but do not specifically address the status of log storage authorization. Devices authorized for initial setup might still need registration to store logs, while devices that are ready for firmware updates or require additional configuration are in different operational states that do not directly relate to their authorization to store logs.