Storage has come a long way since the first hard disk drive shipped in 1956, with no end in sight to the growth in unit shipments and data storage needs.
By Chris Preimesberger
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1. Since the introduction of hard disk drives in 1956, data density (the number of bits packed within a square inch of hard drive space) has increased ten thousand-fold and the price per megabyte has decreased a thousand times. If automobiles had matched