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Hitachi figured that if one Blu-ray disc holds 50GB of data, why not stack 100 super-thin discs on top of each other and cram them into a 2.5-inch thick cartridge? The result: 5TB of storage. That's just what the company is going to do with its SVOD (Stacked Volumetric Optical Discs) technology.

The Blu-ray version is still in the works, but the company says a DVD-based product will be available by early next year. The DVD version's 100 ultra-thin (92 micrometers) double-sided discs will combine to store 940GB on a cartridge, which will sell for around $340.


This could be an efficient way to archive reams of data, that is, until hard disks—and ultimately flash memory—get to be cheaper, more permanent and more portable.

Hitachi planning super data catridge by squeezing 100 Blu-Ray discs [Newlaunches]