I'm looking for a NAS device which either I can build or buy. It needs to be able to stream across two 1080p movies at the same time as my kids watch in lounge and the adults tend to watch in the living room. I don't mind building a NAS if it saves me money as I do have a very tight budget. I don't know what such as a NAS would cost, so please give me an idea.
So my requirements are:-
1. A NAS that can stream two 1080p movies
2. Has at least 2 drive bays
3. Can be built or bought and don't mind if I had to purchase a USED one if it works out cheaper.
4. Low wattage & RAID would be a bonus.
What good-review devices or components can you highly recommend?