Magnetic tapes was the most preferred storage device in era of 60's - 90's. At that time the storage of the magnetic tape was from 5 mb to 140 mb. These magnetic tapes was taken on by the compact discs.But now Sony has come out with a magnetic tape which could store up to 185 TB of data. This means roughly 189 GB/in², which is a massive storage density. A 2 TB hard disk roughly contains memory density nearly equal to 2 GB/in².
Tapes were the backbone of computer memory storage from the 1950s until the late 1980s. They're familiar to early home computer users in the form of the humble audio cassette that saved them from having to laboriously type in a program every time they wanted to run it. In everyday life, tapes were replaced so universally by hard discs, flash drives and optical media including CDs, DVDs and Blu-rays that it often comes as a surprise to learn that magnetic tape is still widely used as back up memory for servers and databases. Because, while discs may be fast and flexible, tape still has the advantage of being very stable and using much less power than hard disc drives, so tape is anything but yesterday’s technology.
To achieve such a high memory density Sony has made a soft polymer underlayer which is 5 micrometers thick. On this layer it deposits a fine nano-grain magnetic particles. These particles are much smaller as compared to the traditional magnetic particles found on magnetic tapes. It makes all the particles to line up in an orderly fashion instead of landing at random on the under layer. This technique is called "Sputter" by Sony.
It sees forward to get this technology to consumer as soon as possible, but it seems that it will take more than a year to get this product in consumers hand.
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