By All drives use the DLT tape format of half-inch wide, at the time of occurrence of this format – it was the most common standard for magnetic tape. Using a tape width can increase the amount of recorded information. A distinctive feature of the DLT-devices is that the receiving reel tape is not in the cassette, and in the drive, which allows more efficient use of the volume of the cartridge. Size cartridge for all drives DLT-V/SDLT/DLT-S4 – 10×10 cm drive himself is somewhat larger. DLT drives read and write linearly to tape, and each track is written along with the data tapes.
When the end of tape head record is repositioned to another position on the tape and begins to record in the reverse direction. This process will occur as long as the tape is not be fully recorded. DLT technology was developed by Quantum, and has now split into two independent project – Value DLT and Super DLT. Figure 1 Ribbon nkopitel format Fig.2 DLT tape transport DLT-Drive Technology Super DLT (SDLT) is the successor to DLT, the developer – Quantum and DEC. It uses a different, more sophisticated tape, other magnetic head (CMR, a cluster of magnetoresistive heads), optical positioning system tracks, etc. You can still read compatibility with old Cartridges DLTIV for SDLT220/320; SDLT600 retain compatibility to read the ink cartridge SDLT I; DLT-S4 remains compatible to read the ink cartridge SDLT II. Fig.3 tape transport SDLT-drive the first device SDLT-220 (11/22 MB / s, 110/220 Gb), appeared in early 2001, Now comes the second SDLT320 (16/32 MB / s, 160/320 Gb), the third SDLT 600 (36/72 MB / s, 300/600 Gb) and fourth-generation DLT-S4 (60/120 MB / s, 800 / 1600Gb) respectively Technology Value DLT (DLT VS) is a side branch of DLT, the developer – Benchmark.