Hyperscale data centers (each at least 100,000 square feet in size) run the internet, and they’re growing like gangbusters, both in number and size. A year ago, there were 449 hyperscale centers in the world; today there are 504, with the biggest topping out at millions of square feet. A conservative estimate for their total footprint is 125 million square feet, roughly the size of 2,170 football fields. One square yard of one of those “football fields” holds 1 petabyte of data: 250,000 DVDs worth. This chart shows the countries where hyperscale data centers are concentrated.