zhang1983 writes "Hitachi says its researchers have successfully shrunken read heads in hard drives to the range of 30-50 nanometers. This will pave the way for quadrupling today's storage limits to 4 terabytes for desktop computers and 1 terabyte on laptops in 2011." Update: 10/15 10:39 GMT by KD : News.com has put up a writeup and a diagram of Hitachi's CPP-GMR head.
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