Exabyte

The exabyte (derived from the SI prefix exa-) is a unit of information or computer storage equal to one quintillion bytes (short scale). The unit symbol for the exabyte is EB. The unit prefix exa indicates the sixth power of 1000:

• 1 EB = 1000000000000000000B = 1018 bytes = 1000000000gigabytes = 1000000terabytes = 1000petabytes

The exbibyte, using a binary prefix, is the analogous power of 1024 bytes.

In principle, the 64-bit microprocessors found in many computers can address 16 exbibytes of memory.