The high growth of digital content is driving the need for high capacity storage to aggregate, host, distribute, manage, backup and use digital content.
Second, nuclear reactors can only be run above maximum capacity for a short period before they begin experiencing complications, so each region maintains backup facilities to burn fuel oil or natural gas at peak periods or for when the nuclear reactors are offline.
Along with ridiculously high-capacity external hard drives, both Mac and Windows users have simple built-in software to make backup a set-it-and-forget-it affair.