Definition

zettabyte

A zettabyte is a measure of storage capacity and is 2 to the 70th power bytes, also expressed as 1021 or 1 sextillion bytes. One zettabyte is approximately equal to a thousand exabytes or a billion terabytes.

The prefix is based on the pronunciation of the Greek letter zeta.

Contributor(s): Clint Gilge
This was last updated in January 2007
Posted by: Margaret Rouse

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