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Thursday, December 8, 2016

The end of an era CD: Russian scientists have invented a perpetual repository of information


Method to store information is almost always found experts, rkhtu im. D. I. Mendeleev, working on behalf of the Fund promising research. This is a plastic CD-ROM they first proposed to use a quartz disk.


photo: morguefile.com

A method of recording on the quartz differs from the recording on the CD-ROM because the information is applied by laser on the surface and in the volume of the disk layers, and also recorded the so-called nanorelay, so one point is recorded not one, but several (up to five) data bits. Scientists call this type of multilevel memory volume memory. In result, the volume of recorded data is obtained several times more. Experts say the ability to save on such disks of the order of terabytes of information (1 TB = 1024 GB). For example, on this disc you can burn about 500 movies or more than 200,000 archival documents. So, the archive of Gosfilmofond of Russia has 70 thousand titles of films, so they all fit on 140 CD-ROM instead of a huge archival storage of film.

Besides quartz disk has a high degree of resistance to high pressures and temperatures – can survive fire without loss of information. Not scary to him and also electromagnetic radiation.

Review of the project Manager of FPI Peter HENKIN:

– The problem of long-term archival storage of data relevant to the state archives, state library funds, medical institutions, organizations of the defense industry. To date, the high cost of storage associated with the size of the stores, as well as the need to rewrite – modern speakers live up to 10-20 years. Information with quartz disks will not need to rewrite. Similar studies, but using other materials are also held in other countries, particularly in England and Japan. But at the moment, existing designs either do not provide data redundancy in case of emergency, or are low capacity. For example, the company Millenniata (USA) released discs of 25 GB of data with the stated data retention period up to 1000 years, however, these drives can survive fire.

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