TB - technical definition
One trillion bytes. In computing and storage systems, a TB (terabyte) is actually 1,099,511,627,776 (2 40 ) bytes, since the measurement is based on a base 2, or binary, number system.The term TB comes from the fact that 1,099,511,627,776 is nominally, or approximately, 1,000,000,000,000. See also byte and T.
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