Disk data storage for 1 billion years

CDs and DVDs for storing data are very familiar to computer users, but their durability is worth discussing.

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Now, experts have been surprised by the statement about an optical disc that can "save data safely within 1 billion years". It was the study of a scientist at the University of Twente in the Netherlands. He developed an optical disc with a combination of tungsten and silicon nitride materials, giving the disc a surprisingly durable disk storage.

Storing information on regular hard drives is at risk because they are very sensitive to external magnetic fields and are easy to damage the mechanical part, so life expectancy is only about 10 years. Similarly, CDs, DVDs and flash memory also have drawbacks, so it cannot exist for more than a few decades of data storage.

Photo: revolucaodigital.net

According to Gizmag magazine, researcher Jeroen de Vries has come up with a way to solve the problem of helping to design new information storage materials. He chose tungsten because of its high temperature resistance and the information was packaged together in silicon nitride, thus preventing distortion when exposed to the environment as well as at high temperatures. Vries believes that this type of optical disc helps store human information and can send it to other planets.

Inside the information storage device is using the QR code engraving method in tungsten and can be easily decoded with a conventional phone today. Even if archived data is invaded up to 7%, it can still be easily recovered. Besides, the data package also has a much smaller backup QR code that each pixel is only a few microns in size.

Vries learns how to store long-term, sustainable information based on a long-time simulation of Arrhenius through thermal and magnetic effects. The material used to store the data was tested by the researchers at a temperature of 200 ° C and the disc remained safe. When raising the temperature to 440 ^° C, there are some signs of degradation but the disc remains intact, the data is still readable and can recover some of the affected small.