Exabyte

The prefix exa-, adopted in 1991, comes from the Greek έξι meaning "six" (as hexa-), as it is equivalent to 1000⁶

1 EB = 10³ PB = 10⁶ TB = 10⁹ GB = 10¹² MB = 10¹⁵ KB = 10¹⁸ bytes.

1000 exabytes equals one zetabyte.

Examples

• The annual Internet traffic in 2007 was estimated at between 5 and 9 exabytes.
• The annual traffic in 2015 is estimated at 2021 exabytes.
• The Internet size in 2009 (understood as global digital storage) was estimated at about 500 exabytes.
• In 2015 it was estimated that by 2025 Twitter will require between 0.001 to 0.017 EB of storage space, while YouTube will require between 1 and 2 EB per year. In terms of science, astronomy will require worldwide 1 EB of storage per year, and the genomics between 2-40 EB per year.