TDK reveals 1TB optical disc at CEATEC
TDK are once again attempting to increase the level of storage an optical disc can hold. Back in 2006 it managed to create a 200GB Blu-ray disc by increasing the storage per layer to 33GB and manufacturing a 6-layer disc.
Now 200GB looks tiny compared to TDKís new 1TB entry. Itís the same diameter as a typical Blu-ray disc, but has 16 layers capable of storing 32GB per side of each layer. Thatís effectively 32 layers each capable of storing 32GB allowing for 1TB of data.
TDK has also overcome most of the problems that would stop this new disc from being commercially viable. The materials used in its manufacture are the same as for Blu-ray discs, and the read speed is the equivalent of Blu-ray. Error rates are also within acceptable limits.So this disc will be easy to manufacture and capable of playing back media at Blu-ray quality.
Due to all those layers the disc is quite thick, though. At nearly 3x the thickness of a Blu-ray disc it currently causes an issue with the optical lens. Once TDK has that figured out it expects to commercialize the disc in a range of different markets with backup storage being an obvious choice.