Unfortunatly the standard response to more than a few problems, including the sleep problem, with the My Cloud seems to be, “it will be corrected in a future firmware update” when in reality it is never fixed.
While it may appear the device is now sleeping the only way to really tell if its sleeping over time is to check the logs. Often, even with the various SSH tweaks and Dashboard setting changes, the My Cloud will sleep for a period of time, then wake up only to go back to sleep some time later.
Using something like the Sleep.awk script can help tell you how long your My Cloud is actually sleeping for.
