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Title: Exabyte  
Author: World Heritage Encyclopedia
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Subject: Zettabyte, Exbibyte, Units of information, Data storage device, Hyper CD-ROM
Collection: Units of Information
Publisher: World Heritage Encyclopedia


uding all audio, video recordings, and text/books) was about 12 exabytes of data.[26] The 2003 Berkeley report stated that in 2002 alone, "telephone calls worldwide on both landlines and mobile phones contained 17.3 exabytes of new information if stored in digital form" and that "it would take 9.25 exabytes of storage to hold all U.S. [telephone] calls each year".[21] International Data Corporation estimates that approximately 160 exabytes of digital information were created, captured, and replicated worldwide in 2006.[27] Research from University of Southern California estimates that the amount of data stored in the world by 2007 was 295 exabytes and the amount of information shared on two-way communications technology, such as cell phones in 2007 as 65 exabytes.[28][29]

Library of Congress

The content of the Library of Congress is commonly estimated to hold 10 terabytes of data in all printed material. Recent estimates of the size including audio, video, and digital materials start at 3 petabytes[30] to 20 petabytes. Therefore, one exabyte could hold a hundred thousand times the printed material, or 500 to 3,000 times all content of the Library of Congress.


In 2013, Randall Munroe compiled published facts about Google's data centers, and estimated that the company has about 10 exabytes stored on disk, and additionally approximately 5 exabytes on tape backup.[31] The company has refused to comment on Munroe's estimate."[32]

See also


  1. ^ "A brief history of virtual storage and 64-bit addressability". Retrieved 2007-02-17. 
  2. ^ a b c Martin Hilbert and Priscila López, "The World’s Technological Capacity to Store, Communicate, and Compute Information", Science, 332(6025), 2011: 60–65; see also "free access to the study" and "video animation".
  3. ^ Bret Swanson (January 20, 2007). "The Coming Exaflood".  
  4. ^ Grant Gross (November 24, 2007). "Internet Could Max Out in 2 Years, Study Says".  
  5. ^ Cisco Systems
  6. ^ Cisco Visual Networking Index (Cisco VNI)
  7. ^
  8. ^ Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, 2012–2017
  9. ^ The Zettabyte Era - Visual Networking Index (VNI) - Cisco Systems
  10. ^ "Global data volume 2009 reached 800 exabyte",, May 2010. Retrieved 2012-02-16.
  11. ^ John Gantz (March 2008). "An Updated Forecast of Worldwide Information Growth Through 2011".  
  12. ^ Bree Nordenson (April 1, 2009). "Overload! Journalism’s battle for relevance in an age of too much information".  
  13. ^ Kathleen Parker (December 2008). "Turn Off, Tune Out, Drop In".  
  14. ^
  15. ^
  16. ^ [1]
  17. ^ [2]
  18. ^ Verlyn Klinkenborg (November 12, 2003). "Trying to Measure the Amount of Information That Humans Create".   (login)
  19. ^ "How many bytes for...". Retrieved 2006-07-19. 
  20. ^ Robbie the Robot' making data easier to mine"'". December 6, 2005. Retrieved 2007-02-17. 
  21. ^ a b "How Much Information? 2003". Retrieved 2006-07-19. 
  22. ^ Roy Williams. "Data Powers of Ten". Archived from the original on 1999-05-08. Retrieved 2006-07-19. 
  23. ^  
  24. ^ Brian Carnell (December 31, 2003). "How Much Storage Is Required to Store Every Word Ever Spoken by Human Beings?". Archived from the original on 2006-02-06. Retrieved 2006-07-19. 
  25. ^  
  26. ^ Juan Enriquez (Fall–Winter 2003). "The Data That Defines Us". CIO Magazine. Retrieved 2006-07-19. 
  27. ^  
  28. ^ Jon Stewart (February 11, 2011). "Global data storage calculated at 295 exabytes".  
  29. ^ Suzanne Wu (February 10, 2011). "How Much Information Is There in the World?".  
  30. ^ Leslie Johnston (April 25, 2012). "A "Library of Congress" Worth of Data: It’s All In How You Define It". 
  31. ^ "Google's Data Centers on Punched Cards". Randall Munroe. October 4, 2013. Retrieved May 10, 2014. 
  32. ^ Randall Munroe (March 2014). """Randall Munroe: Comics that ask "what if?. TED. Retrieved May 10, 2014. 
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