- Petabyte
A petabyte (derived from the
SI prefix "peta-" ) is a unit ofinformation orcomputer storage equal to onequadrillion byte s, or 1000terabytes . 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 abinary prefix , has been proposed as an unambiguous reference to the latter value.Petabytes in use
*The
Internet Archive contains almost 2 petabytes of data. [http://www.archive.org/about/faqs.php]
*Google processes about 20 petabytes of data a day. [http://blog.managednetworks.co.uk/it-support/googles-20-petabytes]
*The 4 experiments in theLarge Hadron Collider will produce about 15 petabytes of data per year, which will be distributed over theLHC Computing Grid . [http://www.interactions.org/cms/?pid=1027032]ee also
*
petabit
*orders of magnitude (data) References
External links
* [http://digital-lifestyles.info/display_page.asp?section=cm&id=1396 CacheLogic Survey: P2P Accounts for 10 Petabytes of Data]
* [http://www.hiptechblog.com/2006/05/11/fancy-a-million-gigabtye-hard-drive Fancy a Million-Gigabyte Hard Drive?]
* [http://www.zenofnptech.org/2005/06/remember-when-1.html Remember when 1MB was a lot?]
Wikimedia Foundation. 2010.
