Simple to use NAS for Tech impaired family?

[yanhchan]

So my HTPCs are currently 75% full and my family rewatches things randomly so deletion is out of the question. I'm looking at adding a 1-2tb NAS. And had been looking at the IproDrive 2TB NAS locally for around $120.

The things that will need access to the NAS would be

Living Room HTPC
Bedroom HTPC
Android Tablet
Laptop
Patriot Media player

Will this NAS device be sufficient for streaming 1080P quality movies with a 10/100 card or wifi device assuming only one device will be accessing at a time?

The box reads simply plug into router and it will show up as a usable storage/NAS partition for all PCs. So I assume all I gotta do is plug this thing into the router.