Hitachi, Ltd. announced today that it has demonstrated the technical feasibility of magnetic recording at 610 Gbit/in2. This considerably exceeds the previously demonstrated capabilities of current perpendicular recording technology found in mass-production hard disk drive (HDD) products. These results hold the potential for a 2.5x increase in the storage capacities of current-generation HDDs.
In conventional hard drives, in order to read data without errors, an error correction code is attached when data is recorded. The code, however, occupies recording area, thus reducing user space. A new signal processing technique, iterative decoding, which does not require a Reed-Solomon error correction code, was developed for the hard drive. This new technique increases user space by approximately 4%, enabling a further increase in storage capacity equivalent to an HDD with a recording density of 635 Gb/in2.
Hitachi show 635 Gb/in2 recording density;>250% more stor
Moderators: NeilBlanchard, Ralf Hutter, sthayashi, Lawrence Lee
Hitachi show 635 Gb/in2 recording density;>250% more stor
http://www.physorg.com/news136815757.html
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