What is Data Volume?
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A terabyte is a relatively large unit of digital data volume: one Terabyte (TB) equals 1,000 Gigabytes.
A Terabyte is 1,000,000,000,000 bytes, or 1,000 gigabytes. It has been estimated that a single TB could hold 1,000 copies of the Encyclopedia Brittanica, and 10 Terabytes could hold the entire printed collection of the U.S. Library of Congress.
A Petabyte is 1,000 Terabytes, and an Exabyte is 1,000 Petabytes or 1,000,000 Terabytes!