Zettabyte
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A zettabyte (symbol ZB, derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes.[1][2][3][4]
- 1,000,000,000,000,000,000,000 bytes = 10007, or 1021.
The term "zebibyte" (ZiB), using a binary prefix, is used for the corresponding multiple of 1024.
[edit] Comparisons for scale
A zettabyte is equal to 1 billion terabytes.
According to IDC, as of 2006 the total amount of digital data in existence was 0.161 zettabytes; the same paper estimates that by 2010, the rate of digital data generated worldwide will be 0.988 zettabytes per year,[5] which, according to Google's CEO Eric Schmidt was already reached in 2009.[6]
Mark Liberman calculated the storage requirements for all human speech ever spoken at 42 zettabytes, if digitized as 16 kHz 16-bit audio. This was done in response to a popular expression that states "all words ever spoken by human beings" could be stored in approximately 5 exabytes of data (see exabyte for details). Liberman did "freely confess that maybe the authors [of the exabyte estimate] were thinking about text."[7]
[edit] See also
[edit] References
- ^ Zettabyte flood predicted for 2015, Tom Burton (January 2008)
- ^ A zettabyte by 2010: Corporate data grows fiftyfold in three years, Lucas Mearian (March 2007)
- ^ Study: Digital universe and its impact bigger than we thought, Lucas Mearian (March 2008)
- ^ Internet Traffic to Reach a Zettabyte by 2015, Says Study
- ^ John F. Gantz; David Reinsel, Christopeher Chute, Wolfgang Schlichting, John McArthur, Stephen Minton, irida Xheneti, Anna Toncheva, Alex Manfrediz (March 2007). "The Expanding Digital Universe: A Forecast of Worldwide Information Growth Through 2010" (PDF). International Data Corporation, sponsored by EMC Corporation. http://www.emc.com/collateral/analyst-reports/expanding-digital-idc-white-paper.pdf. Retrieved 2007-11-28.
- ^ Eric Schimidt (23 September 2009). "A Talk with Google CEO, Eric Schmidt: Technology, Innovation and the Global Economy". http://www.youtube.com/watch?v=Z2X7eadOcDw&NR.
- ^ Mark Liberman (November 3, 2003). "Zettascale Linguistics". upenn.edu. http://itre.cis.upenn.edu/~myl/languagelog/archives/000087.html. Retrieved 2007-02-17.
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