40 stacks of books from Earth to Neptune

"Three years ago, the world's 27 million business servers processed 9.57 zettabytes, or 9,570,000,000,000,000,000,000 bytes of information.

Researchers at the School of International Relations and Pacific Studies and the San Diego Supercomputer Center at the University of California, San Diego, estimate that the total is equivalent to a 5.6-billion-mile-high stack of books stretching from Earth to Neptune and back to Earth, repeated about 20 times.

By 2024, business servers worldwide will annually process the digital equivalent of a stack of books extending more than 4.37 light-years to Alpha Centauri, according to a report compiled by the scientists.
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As large as the numbers may seem, the three scientists who worked on the report stated that their server workload figures may be low because server industry sales figures don't fully account for the millions of servers built in-house by Google, Microsoft, Yahoo and other companies using individual component parts ." - read more...