im trying to build a NAS to replace my WD my book live as it is running out of space. I wanted something small, low power and ideally cheap with room to grow, likely running free nas. All i will really be using it for is to play .iso file dvd's and blu rays to computers and tv's around my house. I have picked out my components, does anyone see any glaring problems with my build or ways I could better achieve my goals? all input is appreciated.