After wasting far too much time backing up data using a USB 2.0 external hard-drive, I've decided I'd like to get a NAS. It will be used primarily for backing up our photos, my work files and hopefully for streaming video to the kid's tablets and the wife's laptop; at least when I finish converting all of our media to MP4 or something similar. It would be nice to back up the Steam collection too, as our internet speeds are pretty awful. I've read around a little but was just hoping I might ask for some of your experience; I'm undecided whether to buy an off-the-shelf unit or build my own. I have been considering a AMD 5450 system (It's been nearly a year since I built a system of any sort and I have the sweats!) but from what I've read about the RAM requirements of programs like freeNAS this may be a lot more expensive. I'm looking to get about 4tb of storage to start with room to expand, so room for 3-4 3.5" drives should be adequate. Budget (with storage) is around £400 but savings are always welcome! Thanks for any advice you can give!