The Reason why your WD Cloud ain't getting no sleep and We Should Petition WD to fix!

[ANDY_CHAN]

Solved by following this post.

MyCloud 4TB won't go into Energy saving mode

Yes you have to remount also. You can put some code in the /etc/rc2.d/S98user-start file. Put in this file those things that you enter from the keyboard on reboot. as an example put these two lines in the file /etc/rc2.d/S20restsdk-serverd stop mount -o remount,noatime,nodiratime /dev/root / RAC