When the PostgreSQL database is externalized in FortiSOAR, certain HA-related CLI commands become inapplicable. Specifically, the csada ha firedrill command, which is used to test the integrity of the HA cluster by simulating failures, is not applicable in scenarios where the database is managed outside FortiSOAR. Externalizing the database changes how FortiSOAR manages database connections, making some internal commands like firedrill redundant.