|Your bytes sent and bytes recieved only refers to total network/internet activity. Unless you upload tons of stuff to your network or the internet, your recieved will always be larger than your sent. When you go to a website or download something, it adds to your recieved because you are recieving information. It does requre you to send some information to recieve information, but it is minimal.|
As far as all of the drives dedicated to ready boost; It doesnt directly relate to your bytes recieved/sent question. Also, I don't see why you need that many connected to your computer unless you have minimal system memory.