I'm building a small system to use mostly as a Plex server, music/midi audio player and file backup from other systems. I'm going to use Windows 8.1 installed on a small SSD and probably a single 2TB HDD for storage to start with. The system will likely be on 24/7 but is probably only be used/accessed sporadically. The question is: Is it worth spending the premium on a NAS specific HDD or would any old drive be fine given the level of usage? I'm trying to spend as little as possible, so I'm basically looking a cost/benefit rather than what is ideal.