Sync to another hub

Can anyone confirm if you can sync two Wd live hubs on a network. I would like to have an automatic solution for backing up all of the family photos and not the movies. I was initially thinking about getting a cheaper Wd live plus for the family room and then hooking up an external drive to my Wd hub. Another hub would cost extra $100 or so and you get 1tb space, better interface, gigabit Ethernet, better remote, and I think slightly better video performance.