Fujifilm Corp developed a magnetic tape whose storage capacity is 5 Tbytes per cartridge and data transmission speed is 240 Mbytes per second.
It has started shipping the "Tape Cartridge for StorageTek T10000C," which uses the new magnetic tape, to Oracle Corp. Its storage capacity is more than five times higher than that of the "StorageTek T10000B," which is the predecessor of the T10000C, and three times higher than those of the "LTO Ultrium 5" tapes. Fujifilm claims that the T10000C uses a magnetic tape with the world's highest capacity.
The magnetic tape is targeted at enterprise systems using mainframes. And Oracle started selling it Feb 1, 2011.
This time, Fujifilm increased storage capacity by employing a barium ferrite (BaFe) magnetic material as a recording material for the tape. In general, the storage capacity of a magnetic tape is increased by microparticulating a magnetic material to enhance recording density. However, it is difficult to increase the storage capacity of a "metal magnetic material," which is currently the mainstream material (It is difficult to maintain the coercive force of a metal magnetic material when it is microparticulated).
On the other hand, a BaFe magnetic material can maintain a higher coercive force, better frequency characteristics and low noise characteristics even when it is microparticulated, compared with a metal magnetic material, Fujifilm said. The capacity of 5 Tbytes was realized by applying the BaFe magnetic material thinly and lubricously, it said.
In addition to the high storage capacity, Fujifilm claims that the T10000C has a storage stability of 30 years or more. This can be realized because the BaFe magnetic material is an oxide and chemically stable. Therefore, the tape is hardly affected by the environment where it is used, and its magnetic properties do not change much over time.
Moreover, Fujifilm enhanced the durability of the cartridge of the tape, enabling to load/unload the drive 25,000 times or more.