Buy a My Cloud 2-bay or 4-bay empty enclosure, install 3 TB drives, attach to the rear USB 3.0 ports two more 3 TB drives, and then attach that to either of the two USB 2.0 ports or the Gigabit ethernet port on my WD TV Live Hub
Pretty sure the My Cloud doesent have a USB “Out” ie. can’t connect to your PC or the Live Hub via a USB cable
And connecting direct to the Live Hub via ethernet port … “apparently” that won’t work either
I say “apparently” … because i asked the same question to a long standing forum member …
he said … Not directly. You’d have to have something to negoiate between the 2
Something like a cheap switch should work, you can usually pick up one for $5 - $10
As for “will it all work” … i don’t know, if i win the lottery then i’ll let you know 
