I currently have 5 HDDs in my PC, 3 of which hold my media. One of the things that I wanted for my next build was to move my media to a machine on it's own and only keep 3 drives in the PC (2 in raid0 and 1 for data). I'm thinking on the following: Sempron 140 2GB DDR3-1333 basic mATX board with at least 4 SATA ports (I'm thinking PCCHIPS A51G at the moment) 2xPCI to 4 SATA ports card (already own one) Cooler Master Elite 335 ATX case + 2x Evercool HDD Armor (12 HDDs max) 2x Seagate ST2000DL003 2TB HDDs (for the time being) I have a few questions: RAID or concatenation? For the time being I'll just keep the 2 drives as they are but I'm planning to buy more as I'm going to start ripping my BDs. As this is going to be a media server I don't know if RAID is worth in this situation (low HDD activity, mostly access operations). FreeNAS, WHS, W7+Remote Desktop.... what OS is best to use?