So, my current setup is a Mac Mini with external 2TB drive attached through USB. This is used as my Media Server. All my music, movies, pictures, TV shows, etc. are stored remotely on the 2TB drive in my iTunes library. I also have a 1TB drive connected directly to my Airport Extreme for use with Time Capsule. Would these both be considered NAS? From my limited understanding of NAS, it is just a drive that is accessible from multiple computers/points on a LAN. Is this correct? If neither of these would be considered NAS, could someone please help me understand exactly what NAS is? I am currently doing research to upgrade my home theater system and on several of the forums I browse NAS is a popular option but it always sounds like they are referring to something more complex than the system I have. Thanks in advance.