Well if we're speaking more realistically, you'd use this for shipping 100tb worth of disks (which would fit in your luggage in both size and weight), and it wo

Well if we're speaking more realistically, you'd use this for shipping 100tb worth of disks (which would fit in your luggage in both size and weight), and it would blow away just about any internet link you could lay your hands on with a remotely similar budget. That is a great point though. A 4TB drive, hooked up to your internal SATA port, will do about 130 megabytes per second, which is around 9 hours for a full copy. Drive speeds increase linearly with track density, but drive capacity increases quadratically, so this is only going to get worse. Hard drives are the new tape.