Panasonic 100GB Blu-ray discs last 100 years
by DJ Neawedde | 19th October 2006
Panasonic has developed a 4-layer, 100GB Blu-ray disc that it claims will last for 100 years by using a tellurium suboxide palladium-doped phase-change recording film, called Te-O-Pd. The film has a high transmittance and crystallization rate which allows them to layer it on without losing data quality.
Each of the four layers in the disc has a 25GB storage capacity totaling up to 100GB and are capable of a 2x writing speed. Te-O-Pd is inorganic and not-very-soluble, so when the discs finally do get tossed in a century or so, they won’t toxify the Earth too much.
CDs, which were originally touted as being able to last ages, turned out to have relatively short lifespans. Instead of decades upon decades of data storage, CDs ended up lasting for as little as 5-10 years because, as it turns out, people’s burning, handling, and storage of the discs varied wildly. Via Ars Technica
Subscribe