Researchers at IBM and Fujifilm are developing a magnetic tape prototype that can store 85.9 billion bits of data per square inch, which means an industry standard LTO-size cartridge could store up to 154 terabytes of uncompressed data.
IBM says magnetic tape is less expensive and more energy efficient than other kinds of storage, making it a natural medium for keeping big data for the long term.
The researchers have developed several new methods for fitting more data onto the tape.
For example, Fujifilm researchers have developed a way to grind barium ferrite particles used to make the magnetic tape much more finely, without using metal-sputtering or evaporation-coating methods.
Meanwhile, IBM researchers refined the control of the tape head servo, so it can be positioned over the tape with nano-scale accuracy, which allows for finer tracks of data to be written and read. The researchers found the tape head produces much stronger magnetic fields, which could lead to reading and writing data on a smaller tape surface.
Finally, the researchers developed a set of signal-processing algorithms that would enable tape machines to capture data with more accuracy, allowing a 90-nanometer giant magneto-resistive read head to be used.
From IDG News Service
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