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Sony and Panasonic to Develop 300GB Optical Disc

By end of 2015

Sony Corporation and Panasonic Corporation have signed a basic agreement with the objective of jointly developing a next-generation standard for professional-use optical discs, with the objective of expanding their archive business for long-term digital storage.

Both companies aim to improve their development efficiency based on the technologies held by each respective company, and will target the development of an optical disc with recording capacity of at least 300GB by the end of 2015.

Going forward, Sony and Panasonic will continue to hold discussions regarding the specifications and other items relating to the development of this new standard.

Optical discs have excellent properties to protect them against the environment, such as dust-resistance and water-resistance, and can also withstand changes in temperature and humidity when stored. They also allow inter-generational compatibility between different formats, ensuring that data can continue to be read even as formats evolve. This makes them a robust medium for long-term storage of content. Both companies have previously developed products based on the Blu-ray Disc format, leveraging the strengths of optical discs. However, both Sony and Panasonic recognized that optical discs will need to accommodate much larger volumes of storage in years to come given the expected future growth in the archive market, and responded by formulating this agreement.

Sony previously commercialized a file-based optical disc archive system in September, 2012. Based on optical disc technology that Sony cultivated for its XDCAM series of professional broadcasting products, this system houses twelve optical discs within a compact cartridge as a single, high-capacity storage solution. Each disc within the cartridge holds 25GB capacity, offering a total range of storage capacities from 300GB to 1.5TB.

In July this year, Panasonic launched its LB-DM9 series of optical disc storage devices. This series uses a dedicated magazine of just 20.8mm thickness to house twelve 100GB optical discs. A maximum of 90 magazines can be stored, providing a total storage capacity of 180TB. In addition, Panasonic adopted a newly-developed changer system together with RAID technology to offer rapid data transfer performance of up to 216MB/s, while also ensuring high reliability by protecting data from unforeseen faults.

In recent years, there has been an increasing need for archive capabilities, not only from video production industries, such as motion pictures and broadcasting, but also from cloud data centers that handle increasingly large volumes of data following the evolution in network services. Both Sony and Panasonic have a track record in developing Blu-ray disc format technologies, and by promoting the adoption of a new standard for next-generation high-capacity optical discs, they intend to offer solutions that preserve valuable data for future generations.

Comments

The coming 300GB optical disc is essentially for professional and archiving applications. It's not going to replace Blu-ray for the consumer market.

300GB on 12cm disc is at least twice more than the higher capacity of Blu-ray, but continues to be far away from the areal density of rigid magnetic disk reaching today 500GB on both sides of a 3.5-inch platter compared to 300GB on one side of the 5-inch optical media.

The press release does not indicate clearly if the new optical disc is writable or not. Being aimed at archiving it will be at least a WORM media, and maybe rewritable, but without version like some pressed read only Blu-rays.

Will 300GB be enough? Today, in term of archiving, a petabyte begins to be a reality. To get this capacity with the new technology, you will need more than 3,000 discs. That's a lot and it will require enormous robotics. That's why magnetic LTO-6 (2.5TB without compression) into tape libraries are now the preferred media for applications needing huge capacities.

No word also from Panasonic and Sony about the long-term archiving properties of their new optical media. The past experience proves that the durability decreases when you increase the areal density of an optical disc.

UDO phase-change writable media (5.25-inch), pushed after Plasmon by small firm Alliance Storage Technologies only, are one of the best technology in term of long-term archiving but are culminating at 60GB (double-sided). One of the most promising archiving media is the 4.7GB M-DISC from start-up Millenniata able to last up to 1,000 years following accelerating lifetime tests.

Long-term archiving is going to be a huge market but today there is no standardized high-capacity media unanimously approved for this kind of applications. That's the challenge of Panasonic and Sony to be able to fill this need. More specs of the new media, including compatibility with current optical discs, and independent testing will be needed to be convinced by the new technology.

Main optical disc formats

  • 1972 Demo of Laservision 12-inch analog video disk, the first laser disc
  • 1975 First digital optical disc by Philips and Sony, 5-inch audio CD
  • 1982 First 120mm CD-ROM also by Philips and Sony, 650MB
  • 1995 First DVD, 4.7GB by Philips, Sony, Toshiba, and Panasonic
  • 2004 First Blu-ray Disc by Sony and Blu-ray Disc Association, 25GB to 128GB

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