Sony and Panasonic have made a joint announcement about its new optical disc standard made specifically for long term storage, called as 'Archival Disc'. One of the features of this drive is that has the ability to storage large amount of data per disc.
A single archival disc can store up to 300GB of sata, but also mentioned that its future implementations should allow 500GB to up to 1TB storage per disc. These drives will also be dust and water resistant with durability that can withstand changes in heat and humidity.
This disc standard is made for professional use who need larger storage solutions than the currently available discs.
The companies also mentioned that it will use crosstalk cancellation technology and high linear density signal processing. By doing so, it will allow them to make discs equivalent to 5 blu-ray discs.