Petabyte
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A petabyte (derived from the SI prefix peta- ) is a unit of information or computer storage equal to one quadrillion (one long scale billiard) bytes. It is commonly abbreviated PB.
Because of irregularities in using the binary prefix in the definition and usage of the kilobyte, the exact number in common practice could be either one of the following:
- 1,000,000,000,000,000 bytes — 10005, or 1015.
- 1,125,899,906,842,624 bytes — 10245, or 250. This capacity may be expressed unambiguously as a pebibyte.
Petabytes in use
The San Diego Supercomputer Center (SDSC) in the USA has a 1 petabyte hard disk store and a 6 petabyte robotic tape store, both attached to the National Science Foundation's TeraGrid network. (Source: Electronics Weekly, December 11, 2002)
The Internet Archive Wayback Machine contains approximately 1 petabyte of data and is currently growing at a rate of 20 terabytes per month. (Source: Internet Archive FAQ) The Internet Archive also acquired an additional 1.5 petabytes of space on June 22, 2005 [1].
The first commercially available Petabyte Storage Array was launched by the EMC Corporation in January 2006, with an approximate cost of USD 4 Million Dollars. [2]
NOB Cross media facilities in the Netherlands employs a 1.5 petabyte storage network for the storage of all old and new public television and radio content in digital format. Within the next year, most Dutch public television content will be pulled directly out of this database during broadcast.
Reportedly, Google has between 1.8 and 5 petabytes of storage.
As of 15 October 2005, 3:50pm, all the files being shared on Kazaa total around 54 petabytes.
In the science-fiction TV series Star Trek: The Next Generation, the android Data was built with an ultimate storage capacity of 800 quadrillion bits, or approximately 88.8 petabytes (Google Calculator Link).
As of January 2006, the http://www.climateprediction.net distributed computing experiment which aims to run thousands of cycles of modelled climate change to predict future patterns is producing 2-3 petabytes of data. This project is conducted via the computing power of thousands of home users whose computers crunch numbers in their spare, 'idle' time.
According to IBM, the Managed Storage Services offering in IBM Global Services manages more than two petabytes for IBM customers around the world.
Indiana University announced on April 5th, 2006 that it is acquiring the nation's fastest university-owned supercomputer and largest disk-based research storage facility. This new supercomputer will be connected to more than 1 petabyte of high speed disk storage. It will be by far the largest of its type of university-owned storage in the United States.
According to scientists the human brain has a storage capacity of roughly 1.4 Petabyte Template:Citation needed.
The Cern has, with his new installed LHC, a datastream with 1 Petabyte/s during the collision of small parts. GridKa [3] (The European Tier1 in Karlsruhe/Germany) plans to extend his diskkapacity to 4.2 Petaybyte for the LHC datastream.