(ZB) - This is 2^70 bytes, or 1024 exabytes. See also exabyte.
A Zettabyte is a unit of Computer Memory equivalently equal to 1024 Exabytes.
A zettabyte (derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes. It is commonly abbreviated ZB. At this time, no computer has one zettabyte of storage.