My (peripheral) experience is that it is much cheaper to get data in than to get data out. When you have the amount of data being discussed — "Enterprise data. Going back years." — that can get very costly.
It's the amount of data where it makes more sense to put hard drives on a truck and drive across the country rather than send it over a network, where this becomes an issue (actually, probably a bit before then).
It's the amount of data where it makes more sense to put hard drives on a truck and drive across the country rather than send it over a network, where this becomes an issue (actually, probably a bit before then).