A Pebibyte (PiB) is a unit of digital information that is equal to 1,125,899,906,842,624 bytes (or 9,007,199,254,740,992 bits) and is defined by the International Electro technical Commission(IEC). The prefix "pebi" is derived from the binary number system and it is used to distinguish it from the decimal-based "petabyte" (PB). It is widely used in the field of computing as it more accurately represents the storage size of high end servers and data storage arrays.