WD Black D10 12TB Spin down and Fan control

spin wdI am using 2 REDs 8TB of size in my desktop computer which runs 247. Windows 10 does not spin down the drives when set it to so in the energy plan. Basically i want to saveI am using 2 REDs 8TB of size in my desktop computer which runs 247. Windows 10 does not spin down the drives when set it to so in the energy plan. Basically i want to save