All in all, magnetic tape is a tape storage system. It is one of the common storage media with the lowest unit cost of information storage, the largest capacity, and the highest standardization of all storage media.
It has good interchangeability and is easy to save. In recent years, it has greatly improved the reliability of tape storage and the speed of reading and writing due to the use of encoding technology with high error correction capabilities and channel technology of write-on-read.
According to the working principle of read and write tapes, it can be divided into helical scanning technology, linear recording (data stream) technology, DLT technology and more advanced LTO technology. This type of tape is further divided into DLT (digital linear tape) tape and IBM3480 / 3490/3590 series Two types of tape.
Due to the rapid development of DLT tape technology, it has become an important standard for network backup tape drives and tape library systems, and because of its large capacity, high speed, and unique development potential, it has made it a leader in medium and high backup systems.
DLT tapes have a capacity of up to 35GB per box, and the cost per unit of capacity is relatively low; IBM3480 / 3490/3590 series tapes are produced by IBM, and the storage capacity of each tape can reach 10GB. The corresponding drive system is actually a tape library. It can store multiple tapes, and its robot can automatically select any one of the tapes to the drive.