IBM is building the largest data drive in history, a storage unit that will hold 120 Petabytes of information. For those who might not recognize the prefix, a Petabyte is 1,000 Terabytes, or 1,000,000 Gigabytes. Using every librarians favorite measure of information storage the “Library of Congress”, the new IBM storage unit could hold over 12,000 copies of the entirety of the Library of Congress.