Probably kind of a newb question here, but I guess I don't really know the answer.
Sites like YouTube, Facebook, which probably have tens of thousands of uploads to them per day... do they just continually add hard drives to increase storage space for all this? Seems kind of impractical. I remember back in the day, you were only allowed to upload a certain amount of data per user account. How do they handle the mass amounts of data constantly being uploaded to those sites? It must be thousands of gigs if not terabytes per day. Where's it all being stored?