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The zettabyte is a multiple of the unit byte for digital information. The prefix zetta indicates multiplication by the seventh power of 1000 or 1021 in the International System of Units (SI). A zettabyte is one sextillion (one long scale trilliard) bytes. The unit symbol is ZB.
The gibibit is a multiple of the bit, a unit of information, prefixed by the standards-based multiplier gibi (symbol Gi), a binary prefix meaning 230. The unit symbol of the gibibit is Gibit. 1 gibibit = 230 bits = 1073741824 bits = 1,024 mebibits.