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Phoenix666 [soylentnews.org] writes:

IBM has claimed its fifth-in-succession world tape density record [theregister.co.uk] with a 330TB raw capacity technology using Sony tape media tech.

Back in April, 2015 IBM and Fujitsu demonstrated [theregister.co.uk] a 123 billion bits/in² 220TB tape using so-called Nanocubic technology and barium ferrite tape media.

This time around, IBM's tape drive researchers are working with Sony Storage Media Solutions and its sputtered media. Engineering developments have enabled an areal density of 201Gb/in².

Their technology includes:

• New signal-processing algorithms for the data channel, based on noise-predictive detection principles, enabling reliable operation at a linear density of 818,000 bits per inch with an ultra-narrow 48nm-wide tunnelling magneto-resistive (TMR) reader.
• A set of combined advanced servo control technologies that enable head positioning with an accuracy of better than 7 nanometres.
• Use of a 48nm-wide TMR hard disk drive read head, which enables a track density of 246,200 tracks per inch, a 13-fold increase over the TS1155 tape drive.
• New low-friction tape head technology that permits use of very smooth tape media.

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