A petabyte (derived from the SI prefix "peta-" ) is a unit of information or computer storage equal to one quadrillion bytes, or 1000 terabytes. It is commonly abbreviated PB. When used with byte multiples, the prefix may indicate a power of either 1000 or 1024, so the exact number may be either:

* 1,000,000,000,000,000 bytes — 10005, or 1015, or
* 1,125,899,906,842,624 bytes — 10245, or 250.

The term "pebibyte", using a binary prefix, has been proposed as an unambiguous reference to the latter value.

Petabytes in use

*The Internet Archive contains almost 2 petabytes of data. []
* Google processes about 20 petabytes of data a day. []
*The 4 experiments in the Large Hadron Collider will produce about 15 petabytes of data per year, which will be distributed over the LHC Computing Grid. []

ee also

* petabit
* orders of magnitude (data)


External links

* [ CacheLogic Survey: P2P Accounts for 10 Petabytes of Data]
* [ Fancy a Million-Gigabyte Hard Drive?]
* [ Remember when 1MB was a lot?]

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Look at other dictionaries:

  • Petabyte — Saltar a navegación, búsqueda Cantidad de bits Prefijo SI Prefijo Binario Nombre (Símbolo) Estandar SI Uso Binario Nombre (Símbolo) Valor kilobit (kbit) 103 …   Wikipedia Español

  • Petabyte — Petabyte,   PByte …   Universal-Lexikon

  • Petabyte — Einheit Norm IEC 60027 2 Einheitenname Byte, Oktett Einheitenzeichen B Beschriebene Größe(n) Daten In SI Einheiten …   Deutsch Wikipedia

  • petabyte — petabaitas statusas T sritis informatika apibrėžtis Nesisteminis atminties ir duomenų kiekio matavimo vienetas, lygus 2¹⁰ = 1024 ↑terabaitams. Santrumpa PB. Kartais petabaitas laikomas apytiksliai lygiu milijonui gigabaitų. Norint atsiriboti nuo… …   Enciklopedinis kompiuterijos žodynas

  • Petabyte — Octet Pour les articles homonymes, voir Octet (homonymie).  Ne doit pas être confondu avec byte. Multiples d’octets tels que définis par IEC 60027 …   Wikipédia en Français

  • petabyte — pet·a·byte (pĕtʹə bīt) n. 1. A unit of computer memory or data storage capacity equal to 1,024 terabytes (250 bytes). 2. One quadrillion bytes. * * * …   Universalium

  • petabyte — noun a) One quadrillion (1,000,000,000,000,000) bytes. SI symbol: PB. b) 1,125,899,906,842,624 bytes or 1024, or 2. This capacity may be expressed unambiguously as a pebibyte. SI symbol: PiB, computing symbol: PB. , Previous: terabyte , Next:… …   Wiktionary

  • Petabyte — Unidad de almacenamiento de información. Corresponde 1024 terabytes, o más de mil billones (exactamente 1.125899906842624 billones) de bytes, es decir 1.125.899.906.842.624 bytes. Se representa con el símbolo PB. 1 PB = 210 TB = 220 GB = 230 MB …   Enciclopedia Universal

  • petabyte — ● ►en n. m. ►UM Voir la version française pétaoctet …   Dictionnaire d'informatique francophone

  • petabyte — n. data storage unit equal to approximately 10 to the 15th power bytes, 1024 terrabytes (Computers) …   English contemporary dictionary

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