Exabyte

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Multiples of bytes
Decimal
ValueMetric
1000kBkilobyte
10002MBmegabyte
10003GBgigabyte
10004TBterabyte
10005PBpetabyte
10006EBexabyte
10007ZBzettabyte
10008YByottabyte
Binary
ValueJEDECIEC
1024KBkilobyteKiBkibibyte
10242MBmegabyteMiBmebibyte
10243GBgigabyteGiBgibibyte
10244--TiBtebibyte
10245--PiBpebibyte
10246--EiBexbibyte
10247--ZiBzebibyte
10248--YiByobibyte
Orders of magnitude of data
 
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Multiples of bytes
Decimal
ValueMetric
1000kBkilobyte
10002MBmegabyte
10003GBgigabyte
10004TBterabyte
10005PBpetabyte
10006EBexabyte
10007ZBzettabyte
10008YByottabyte
Binary
ValueJEDECIEC
1024KBkilobyteKiBkibibyte
10242MBmegabyteMiBmebibyte
10243GBgigabyteGiBgibibyte
10244--TiBtebibyte
10245--PiBpebibyte
10246--EiBexbibyte
10247--ZiBzebibyte
10248--YiByobibyte
Orders of magnitude of data

The exabyte is a multiple of the unit byte for digital information. The prefix exa indicates the sixth power of 1,000 and means 1018 in the International System of Units (SI), and therefore 1 exabyte is one quintillion bytes (short scale). The unit symbol for the exabyte is EB.

1 EB = 1000000000000000000B = 1018bytes = 1000petabytes = 1 billion gigabytes.

The exbibyte, using a binary prefix, means 10246bytes.

Usage examples[edit]

Several filesystems use disk formats that support theoretical volume sizes of several exabytes, including Btrfs, XFS, ZFS, exFAT, NTFS, HFS Plus, and ReFS.

Practical comparisons[edit]

All words ever spoken[edit]

A popular expression claims that "all words ever spoken by human beings" could be stored in approximately 5 exabytes of data[18][19][20] (although this project is now outdated and therefore not entirely accurate), often citing a project at the UC Berkeley School of Information in support.[21] The 2003 University of California Berkeley report credits the estimate to the website of Caltech researcher Roy Williams, where the statement can be found as early as May 1999.[22] This statement has been criticized.[23][24] Mark Liberman calculated the storage requirements for all human speech at 42 zettabytes (42,000 exabytes, and 8,400 times the original estimate), if digitized as 16 kHz 16-bit audio, although he did freely confess that "maybe the authors [of the exabyte estimate] were thinking about text".[25]

Earlier studies from the University of California, Berkeley, estimated that by the end of 1999, the sum of human-produced information (including 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]

100,000 Libraries of Congress[edit]

The Library of Congress is commonly estimated at 10 terabytes for all printed material. Recent estimates of the size including audio, video, and digital materials is from 3 petabytes[30] to 20 petabytes.

So, an exabyte could hold a hundred thousand times all the printed material, or 500 to 3,000 times all content of the Library of Congress.

See also[edit]

References[edit]

  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". Wall Street Journal. Retrieved 2007-02-17. 
  4. ^ Grant Gross (November 24, 2007). "Internet Could Max Out in 2 Years, Study Says". PC World. Retrieved 2007-11-28. 
  5. ^ Cisco Systems
  6. ^ Cisco Visual Networking Index (Cisco VNI)
  7. ^ http://allthingsd.com/20110601/cisco-the-internet-is-like-really-big-and-getting-bigger/
  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", genevaassociation.org, May 2010. Retrieved 2012-02-16.
  11. ^ John Gantz (March 2008). "An Updated Forecast of Worldwide Information Growth Through 2011". IDC. Retrieved 2009-04-20. 
  12. ^ Bree Nordenson (April 1, 2009). "Overload! Journalism’s battle for relevance in an age of too much information". Columbia Journalism Review. Retrieved 2009-04-20. 
  13. ^ Kathleen Parker (December 2008). "Turn Off, Tune Out, Drop In". Washington Post. Retrieved 2009-04-11. 
  14. ^ "From Molecules to the Milky Way: Dealing with the Data Deluge". Retrieved 2007-11-10. 
  15. ^ http://www.computerworld.com.au/article/319128/ska_telescope_provide_billion_pcs_worth_processing_updated_/
  16. ^ [1]
  17. ^ [2]
  18. ^ Verlyn Klinkenborg (November 12, 2003). "Trying to Measure the Amount of Information That Humans Create". New York Times. Retrieved 2006-07-19.  (login)
  19. ^ "How many bytes for...". techtarget.com. Retrieved 2006-07-19. 
  20. ^ "'Robbie the Robot' making data easier to mine". purdue.edu. December 6, 2005. Retrieved 2007-02-17. 
  21. ^ a b "How Much Information? 2003". berkeley.edu. Retrieved 2006-07-19. 
  22. ^ Roy Williams. "Data Powers of Ten". Archived from the original on 1999-05-08. Retrieved 2006-07-19. 
  23. ^ Mark Liberman (November 12, 2003). "More on the 5 exabyte mistake". upenn.edu. Retrieved 2006-07-19. 
  24. ^ Brian Carnell (December 31, 2003). "How Much Storage Is Required to Store Every Word Ever Spoken by Human Beings?". brian.carnell.com. Archived from the original on 2006-02-06. Retrieved 2006-07-19. 
  25. ^ Mark Liberman (November 3, 2003). "Zettascale Linguistics". upenn.edu. Retrieved 2007-02-17. 
  26. ^ Juan Enriquez (Fall/Winter 2003). "The Data That Defines Us". CIO Magazine. Retrieved 2006-07-19. 
  27. ^ Brian Bergstein (March 5, 2007). "So much data, relatively little space". BusinessWeek. Retrieved 2007-03-05. 
  28. ^ Jon Stewart (February 11, 2011). "Global data storage calculated at 295 exabytes". BBC. 
  29. ^ Suzanne Wu (February 10, 2011). "How Much Information Is There in the World?". USC. 
  30. ^ Leslie Johnston (April 25, 2012). "A "Library of Congress" Worth of Data: It’s All In How You Define It". 

External links[edit]