zettabyte definition

Contributor(s): Clint Gilge

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.

This was first published in January 2007

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