Exabyte

The exabyte is a multiple of the unit byte for digital information. The prefix exa indicates the sixth power of 1,000 and means 1018 in the International System of Units (SI), and therefore 1 exabyte is one quintillion bytes (short scale). The unit symbol for the exabyte is EB.

1 EB = 1 000 000 000 000 000 000 B = 1018 bytes  = 1 000 petabytes  = 1 billion gigabytes.

Note
Referenced in Galactic Chronicles IX: Eric Olafson, Space Pirate, CHAPTER 15: Preparation.