Is there a network traffic / core load penalty for having NAS based storage, over local storage? Does this have an impact when scaling a system up?
I can imagine that for a couple of HD streams a NAS is going to work, but when you are recording a number of HD tv programmes along with playing a number HD streams there comes a point where pushing it backwards and forwards over one network link might not be ideal (I will have four satellite tuners and two or three terrestrial tuners with up to five media serving streams potentially working at once). My experience with NAS is that the processing overhead can sometimes slow everything down when it's loaded, where a dedicated server with storage copes better. Or am I imagining problems that aren't there?