IBM again set a record for areal density on magnetic tape

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2017-08-02 16:00:04

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IBM again set a record for areal density on magnetic tape Source:

If you think that the cassette magnetic tape has been left far , you are deeply mistaken. The American company IBM continues to actively develop this area and to improve magnetic tape storage from year to year. After all, tiny cartridge tape can store dozens or even hundreds of gigabytes of data. The engineers together with the specialists of the company Sony has created a new generation of magnetic film, so that the cartridge can easily record 330 terabytes of uncompressed data. And thanks to a special protective coating kept this film can for decades.

Magnetic tape was invented in the 30-ies of the last century the engineers of the German companies AEG and BASF. Then it was used exclusively for recording. As data storage, it has been used only in 1951. Traditionally, the film used in the USA for archiving tax documents and records of patient clinics. The first cassette manufactured IBM at the time housed only 2 megabytes of data. Widely used in computer magnetic storage began only in the early 70-ies. And in 1989, the Japanese company Sony in partnership with HP has developed a popular data storage format DDS.

What is 330 terabytes of data? It is approximately 330 million books written by mankind. And they all fit in a small plastic cartridge that easily fits in your pocket. It was achieved thanks to a sharp increase in the density of recording on magnetic tape to 201 Gigabit per square inch of its surface. It is about 20 times higher than the existing analogues on the market. To create a new generation of film storage, IBM engineers had to develop several entirely new technologies, including a unique protective coating. Was first used two protective layers: the first is for the physical protection of the magnetic layer and the second lubricant to reduce friction during recording and reading data from the tape.

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