Sony Corporation has announced the development of a next-generation magnetic tape recording technology said to offer high-capacity data back up and archive solutions for the broadband network era.
By combining a highly sensitive GMR (Giant Magneto Resistive) head with the newly developed high-density metal evaporated tape, storage density of 6.5 Gb/inch2 can now be realised.
This is said to result in up to 1 tera byte capacity in 8mm-cassettes.
Sony has said in a statement that it will now move forward to apply the technology to next-generation tape streamer systems for practical applications in 2003-4.
The new technology was realised through the development of high-density metal evaporated tape that can record at an extremely low noise level.
In addition to thinning the tape material (30nm, 1/6 of AIT2 tape), the metal evaporation process has been optimised to micro-fabricate the magnetic particles to attain a signal-to-noise level of 26dB.
Additionally, the conductive nature of the metal evaporated tape is effective in decreasing the static charge level, as the charge level of the tape is 5V compared to the breaking charge level of the GMR head (40V).
Head wear has also been decreased to 1/20 of the existing systems through the even fabrication process of the tape surface.
Sony has announced that it will now work to develop a technology to write stable high-density tracks on the tape for practical application to tape streamer systems.
Additionally, development will be undertaken to improve the reliability and durability of the tape and the GMR head.