To restore an encrypted backup, what requirement must be met regarding the FortiAnalyzer?

To successfully restore an encrypted backup on a FortiAnalyzer, it's essential that the device is the same model and firmware version as the one from which the backup was created. This requirement ensures compatibility in data structure and configuration processes, as different models or firmware versions may have varying capabilities or system requirements. Therefore, using a device that matches the original in both model and firmware minimizes the risk of encountering issues related to inconsistencies or unsupported features during the restoration process.

The other options comprise requirements that do not address the technical compatibility required for restoring an encrypted backup. While configuration settings, physical location, and serial numbers may have significance in other contexts, they do not impact the technical feasibility of restoring the backup itself. This is why ensuring that the model and firmware version match is the critical factor in the restoration process.