Refer to the exhibits. Exhibit A shows system performance output. Exhibit B shows a FortiGate configured with the default configuration of high memory usage thresholds. Based on the system…

Administrators can access FortiGate only through the console port when memory usage reaches a specific, higher 'red_line_admin' threshold, not merely upon entering the initial conserve mode.

FortiGate devices enter conserve mode when memory usage exceeds a predefined 'red_line' threshold, typically 90% by default, to protect system stability by blocking new sessions and reducing memory consumption.

Conserve mode is primarily about system resource management and stability, not about changing file submission behavior to FortiSandbox for inspection.

If memory usage escalates further, exceeding the 'red_line_admin' threshold (typically 97% by default), the FortiGate prevents administrators from making configuration changes to avoid further memory allocation and ensure system integrity.