petabyte

[pet-uh-bahyt] /ˈpɛt əˌbaɪt/
noun
1.
2 50 bytes, or 1,024 terabytes.
2.
(loosely) 10 15 or a million billion bytes. Symbol: PB.
Origin
peta- + byte
British Dictionary definitions for petabyte

petabyte

/ˈpɛtəˌbaɪt/
noun
1.
(computing) 1015 or 250 bytes
petabyte in Science
petabyte
  (pět'ə-bīt)   

  1. A unit of computer memory or data storage capacity equal to 1,024 terabytes (250 bytes).

  2. One quadrillion bytes. See Note at megabyte.


petabyte in Technology
unit
2^50 = 1,125,899,906,842,624 bytes = 1024 terabytes or roughly 10^15 bytes. 1024 petabytes is one exabyte.
Google is estimated (https://www.cio.com/article/135700/Seven_Wonders_of_the_IT_World/3) to store about 200 petabytes of data in about 25 data centers around the world.
See prefix.
(2007-09-13)