Like the pervious poster indicated, do a subforum search. There are several threads that detail the differences between the older v3.x/4.x My Cloud’s and the newer v2.x My Clouds and even more threads that discuss the sleep issue(s). There is some brief general bench marking information at the following thread/post:
https://community.wd.com/t/new-release-firmware-release-04-04-02-105-1-27-2016/148441/89
