Does "Drive Sleep" functioncontrol atttached USB drive as well?

…although I am not sure that “Drive Sleep” is actually working on my My Cloud internal drive (I think there is supposed o be a slow flashing blue LED when the drive is asleep and I have never seen it do that)…my attached USB drive seems to be spinning at all times as well.  Is there a function I can do through SSH session to test a force sleep command?

tnx all

The USB hard drive is treated as an additional share within your WD My Cloud, and as such it is governed by your WD My Cloud’s sleep behavior.