Eric Schonfeld sys: By 2013, annual global IP traffic will reach two-thirds of a zettabyte, according to a new forecast of IP traffic issued by Cisco today. What is a zettabyte? It is a trillion gigabytes, dummy. (I had to look that up too). And that number represents more than a fivefold increase in IP traffic from today. (See the forecast in the tables below).
Source: http://www.techcrunch.com/2009/06/09/cisco-by-2013-video-will-be-90...