How many giga- or tera- bytes is the iTunes store? (see description)?

If you were to download every item in the iTunes store (every song, every movie, TV show, audiobook, app, EVERYTHING) how many gigs, or terabytes would that be? Certainly larger than any normal computer's hard drive, right?How many giga- or tera- bytes is the iTunes store? (see description)?
It would be several terabytes. A home computer could not possibly handle that amount of storage but a storage server (which is what apple is using) can handle petabytes (next step above terabyte) of space.How many giga- or tera- bytes is the iTunes store? (see description)?
well, lets say there are 5 million songs on the iTunes store at 4MB each, that's 20TB right there. Plus figure another 10-20 TB each for the movies/TV shows and the Apps. Yes, it's more than a normal computers hard drive- the largest hard drive made today (and the largest that most computers can support right now) is 2TB.