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词条 Terabyte
释义

  1. Definition

  2. History

  3. Illustrative usage examples

  4. See also

  5. References

{{Quantities of bytes}}

The terabyte is a multiple of the unit byte for digital information. The prefix tera represents the fourth power of 1000, and means 1012 in the International System of Units (SI), and therefore one terabyte is one trillion (short scale) bytes. The unit symbol for the terabyte is TB.

Definition

1 TB = {{gaps|1|000|000|000|000|bytes}} = {{gaps|1012|bytes}} = {{gaps|1|000|gigabytes}}.

A related unit, the tebibyte (TiB), using a binary prefix, is equal to 10244 bytes. One terabyte is about 0.9095 TiB. Despite the introduction of these standardized binary prefixes, the terabyte is still also commonly used in some computer operating systems, primarily Microsoft Windows, to denote {{gaps|1|099|511|627|776}} (10244 or 240) bytes for disk drive capacity.[1][2]

One thousand terabytes (1000 TB) is equal to one petabyte (1 PB).

History

Early usage of terabyte in selected products:

  • Optical disk storage: 1985[3]
  • Supercomputer mass storage: ca. 1992 (decimal usage) [4]
  • Supercomputer memory: 2005 (binary usage)[5]
  • Hard disk drives: 2007 (decimal usage)[6]
  • Tape drives: 2010 (decimal usage)[7]
  • Motherboard memory: 2011 (binary usage) [8]

Illustrative usage examples

Examples of the use of terabyte to describe data sizes in different fields are:

  • Library data: The U.S. Library of Congress Web Capture team claims that {{as of|March 2014|lc=y}} "the Library has collected about 525 terabytes of web archive data" and that it adds about 5 terabytes per month ("one terabyte = 1,024 gigabytes").[9]
  • Computer hardware: Hitachi introduced the world's first one terabyte hard disk drive in 2007 (1 terabyte = 1,000 gigabytes).[10]

See also

  • Orders of magnitude (data)

References

1. ^How operating systems report drive capacity, Seagate Inc.
2. ^{{cite web|url=http://support.seagate.com/kbimg/172191-1.jpg|title=Windows disk space using TB as a binary value, from Seagate.com|publisher=|accessdate=16 April 2018}}
3. ^{{cite web|url=https://www.spiedigitallibrary.org/conference-proceedings-of-spie/0529/0000/Optical-Document-Filing-System-With-Tera-Byte-Capacity/10.1117/12.946440.short|title=Optical Document Filing System With Tera-Byte Capacity|first=Masaaki|last=Ishigame|date=12 April 1985|publisher=International Society for Optics and Photonics|volume=0529|pages=106–116|accessdate=16 April 2018|via=www.spiedigitallibrary.org|doi=10.1117/12.946440}}
4. ^Vetter, R. J., Du, D. H., & Klietz, A. E. (1992, March). Network Supercomputing: Experiments with a Cray-2 to CM-2 HiPPI Connection. In Heterogeneous Processing, 1992. Proceedings. Workshop on (pp. 87-92). IEEE.
5. ^Gara, et. al., (2005, March/May). Overview of the Blue Gene/L system architecture. IBM JRD, p.195-212 "32 TB of total memory" (p.203)
6. ^{{cite web|url=http://www.pcworld.com/article/128400/article.html|title=Hitachi Introduces 1-Terabyte Hard Drive|website=PCWorld|accessdate=16 April 2018}}
7. ^{{cite web|url=http://www.techjungle.com/6766LTO-5|title=Tech Jungle: Tech News and Opinions (by Paul Spain)|website=www.techjungle.com|accessdate=16 April 2018}}
8. ^{{cite web|url=http://www.techpowerup.com/157593/new-intel-server-board-to-hold-1-tb-of-ram.html|title=New Intel Server Board to Hold 1 TB of RAM|publisher=|accessdate=16 April 2018}}
9. ^{{cite web|url=https://www.loc.gov/webarchiving/faq.html#05 |title=Web Archiving FAQs: How large is the Library's archive? |publisher=Library of Congress |archiveurl=https://web.archive.org/web/20140731152821/http://www.loc.gov/webarchiving/faq.html#faqs_05 |archivedate=31 July 2014 |accessdate=7 April 2011}}
10. ^{{cite news |title=Hitachi Introduces 1-Terabyte Hard Drive |url=http://www.pcworld.com/article/128400/hitachi_introduces_1terabyte_hard_drive.html |work=PC World |date=2007-01-07 |accessdate=2008-09-15}}
11. ^{{cite news|url=http://www.cbsnews.com/stories/2006/06/22/tech/main1740956.shtml|title=Ancestry.com Adds U.S. Census Records|date=2006-06-22 | work=CBS News}}
12. ^{{cite news |title=Just How Much Is That 300 TB of Large Hadron Collider Data CERN Released? |url=http://www.popularmechanics.com/technology/a20540/300-tb-cern-data-large-hadron-collider/ |work=Popular Mechanics |date=2016-04-25 |accessdate=2016-07-18}}
13. ^{{cite web|last=Swanson |first=Bret |url=http://www.disco-tech.org/2007/10/an_exabyte_here_an_exabyte_the.php |title=Discovery Institute's Technology Blog: An exabyte here, an exabyte there |publisher=disco-tech |date=2007-10-03 |accessdate=2013-04-14}}
14. ^{{cite news |first=Bobby |last=White|title=Cisco Projects Growth To Swell for Online Video |url=https://www.wsj.com/articles/SB121358372172676391 |work=The Wall Street Journal|date=2008-06-16}}
15. ^{{cite web |title=Yahoo! Groups Blog |date=2009-05-09 |url=http://www.ygroupsblog.com/blog/2009/03/17/groups-search-update/ |deadurl=yes |archiveurl=https://web.archive.org/web/20090508143215/http://www.ygroupsblog.com/blog/2009/03/17/groups-search-update |archivedate=2009-05-08 |df= }}
16. ^{{cite news|publisher=The Straits Times|date=2009-04-08|title=Taking a monster shit; Massive computer power was needed to create the 3-D movie Monsters Vs Aliens.|author=IRENE THAM|quote=The 3-D movie used up close to 100 terabytes of disk space and more than 40 million hours of rendering.}}
17. ^{{cite news|title=Usenet Sale: Sounds to Silence?|url=https://www.wired.com/science/discoveries/news/2000/10/39622 |date=2000-10-25 |accessdate=2009-10-13|quote=It's loaded with 500 million postings .... [and has] ballooned to over 1.5 terabytes}}
18. ^{{cite web|url=http://meta.wikimedia.org/wiki/Data_dumps |title=Data dumps – Meta |publisher=Meta.wikimedia.org |date= |accessdate=2013-04-14}}
19. ^{{cite web|url=http://www.dkrz.de/pdf/poster/ISC10-Poster_Web/ISC10_HardwareDKRZ.pdf |accessdate=August 17, 2010 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}
20. ^{{cite web|url=http://www.nasa.gov/mission_pages/hubble/story/index.html |title=NASA – NASA – The Hubble Story |publisher=Nasa.gov |date=2010-04-29 |accessdate=2013-04-14}}
21. ^{{cite web|url=http://www.ibmsystemsmag.com/ibmi/trends/whatsnew/It%E2%80%99s-Technical,-Dear-Watson/ |title=It’s Technical, Dear Watson – The "Jeopardy!" playing computer’s feeds and speeds |publisher=ibmsystemsmag.com |date=February 2011 |accessdate=2013-07-04}}
{{Computer Storage Volumes}}

1 : Units of information
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