# AdminDrainRequest - `timeoutSec` (`number | null`, optional): Maximum seconds to wait for the server to quiesce before returning. - `reason` (`string | null`, optional): Human-readable reason for initiating drain mode. - `waitForQuiesce` (`boolean | null`, optional): If true, wait for in-flight requests to complete and the server to reach QUIESCED before responding. [TypeScript](../../typescript.md)