MyCloud is still stuck. Support on the phone did not know how to get it fixed.
Most probably I have lost all data. Thank you WD!
Been there and have resetted successfully with no lost in data and hoping the same for you.
Pull the power unless you can shut down via the web page
hold reset on the back of your cloud…
keep holding reset while you shove the power cord in…
keep holding reset for 40 seconds, while the cloud boots up
Everything will be reset, your shares, your passwords, your users, but your data remains…
It will take between an hour to 3 hours to re-initalize. Grab a coffee and check your Cloud Dashboard.
edit: you asked “how often would you do a full test?” I would say never, unless your device is really acting up, like getting hunged up when copying data to and from the device (bad sectors), waiting long reboot times, etc. but… even then… I might just do a quick test and find other solutions other then doing a full test.