If an extended SMART self test takes longer than the configured spin-down delay for the array disk, then the disk spins down and the self test is aborted. This behaviour is different from previous versions, where spin-down was temporarily suspended until after the self-test had completed. The message "SMART self test in progress" appears but the spin-down prevention doesn't operate.   pusok-diagnostics-20210120-0317.zip (I know the unassigned Hitachi disk is totally shot!)