IBM device restores world density record

IBM device restores world density record
Tom Foremski IBM is reclaiming the world record in data storage after achieving a density level of 20 billion bits per square inch. Researchers at IBM’s Almaden Research labs in Silicon Valley said they have demonstrated a device that can store 2.5Gbytes per square inch. This is three times the density of commercial disk drives, and the storage equivalent of two hours of MPEG-2 digital video. IBM says that a key goal of the research is the development of new data storage materials. “To make smaller bits that will still store data reliably, we must improve the disk materials and read/write components in a way that the bits can be quickly erased and rewritten, but that their magnetic orientations will not change by themselves,” said Robert Scranton, director of recording head technology at IBM’s Almaden Research Center. The latest achievement was made possible using an advanced version of the giant magneto-resistive read head, a narrow-track thin-film inductive write head and ultra-low-noise cobalt-alloy magnetic media.


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