CDs with a capacity of 200 terabytes were created

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Researchers at Shanghai University of Science and Technology have developed an optical compact disc (CD) that can store approximately 1.6 petabits, or 200 terabytes, of information on each side. The article was published in the scientific journal magazine Nature.

For comparison, a modern Blue-ray disk allows you to store about 100 gigabytes of data. Thus, a new disc can replace 2 thousand Blue-ray discs.

Scientists have managed to significantly increase the capacity of optical discs thanks to planar 3D recording architecture. The technology uses a highly transparent, homogeneous photoresist film coated with a special dye that responds to femtosecond lasers. This made it possible to fit hundreds of layers into a space that previously could fit up to four layers.

According to the researchers, another advantage of their development was durability; petabit disks can last between 50 and 100 years.

The authors believe that their discovery will make data centers much more compact and reduce heat and energy consumption. New drives will also give people back the ability to store large amounts of valuable information at home without relying on the cloud. However, widespread adoption of petabit discs is not yet possible due to the lack of suitable devices to play them.

happened before known About Google’s decision to stop keeping backups of the entire Internet.

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