"Well, what they’re putting together there in Bluffdale is a million-square-foot storage facility, of which only 100,000 is really going to have equipment to store data. But the rest of it, the peripherals, then are power generation, cooling and so on. So, but in there, there’s 100,000 square feet of storage capacity. And at current capabilities that are advertised on the web with Cleversafe.com, they can put 10 exabytes in about 200 feet—square feet of storage space in 21 racks. What that means is, when you divide that out, is you—that even at current capacity to store information, that’s five zettabytes that they can put into Bluffdale. And if you—and my estimate of the data they would be collecting, which would include the targeted audio and perhaps all of the text in the world, that would be on the order of 20 terabytes a minute—or, yeah, 20 terabytes a minute. So if you figure out from that how much they could collect, it would be like 500 years of the world’s communications. But I only estimated a hundred, because really they want space for parallel processors to go at cryptanalysis and breaking codes.
— William Binney, former senior NSA crypto-mathematician
(in an interview with Amy Goodman) Democracy Now!