currently it’s only an ON/OFF switch:
and it sleeps the disks after 7-10 minutes,
which is extremely low amount of time – some songs are longer than that and so my NAS needs several seconds to wake up every 10~30 minutes (b/c entire song gets cached in memory)
so me and others from as far as 2016 suggesting instead — having a custom/manual delay on sleep timer.
up to something around 2 hours – such so HDDs don’t spend it’s half-life on needless spinups&downs, but also dont stay up all night / day / vacation week by idle-spinning