I recently mounted some folders from my Qnap TS-219 to my LibreELEC 10.0.4 filesystem on RPi 4 using this guide. I mounted both NFS and SMB.
After doing this it seems my NAS HD doesn't spin down at all, or at least very seldom, compared to before. I have set up the NAS HD to spin down after 30 mins of inactivity. Earlier I only had access to the NAS via normal "sources/shares" method (i.e. without mounting) in LibreELEC.
Before investigating this more closely on the NAS side, I would like to know if this is a known behaviour with mounted shares and can something be done to let LibreELEC allow the NAS to spin down the HD, while maintaining network share mounts?