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The yobibyte is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC). Its unit symbol is YiB. The prefix yobi (symbol Yi) represents multiplication by 10248, therefore: 1 yobibyte = 280 bytes = 1 208 925 819 614 629 174 706 176 bytes = 1024 zebibytes.
The exabyte is a multiple of the unit byte for digital information. In the International System of Units (SI), the prefix exa indicates multiplication by the sixth power of 1000 (1018). Therefore, one exabyte is one quintillion bytes (short scale). The symbol for the exabyte is EB.