First, the proposed configuration would amount to 1.2 petabytes, which is a thousand times smaller than 1.2 exabytes. Second, a 5 exabyte store would roughly be eight thousand times too small to store "all words ever spoken by human beings", at least in audio form. Therefore the 2007 cluster's storage would be too small by a factor of about 32 million rather than a factor of 4. I freely confess that maybe the authors were thinking about text -- but in the first place I'm a phonetician, and in the second place most human languages have not had a written form. So bear with me here for a while.Link (via Ben Hammersley)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.