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Dlttape Drive
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Features and Benefits of Sdlt Super Dlt Tape Media Format
The Super DLT tape is the new extended version of the DLT (Digital Linear Tape). The SDLT tape has multi track and linear data recording mechanism. The first generation of the SDLT tape drive provided native capacity of 160GB and compressed 320GB capacity. The capacity of the 2nd generation of Super DLT tape was raised to 300GB (native) & 600GB (compressed rate). The SDLT-II tape drives are backward read compatible (dependent on drive) with the data tapes recorded on DLT-8000, DLT-7000, DLT-4000, and SDLT tape drives of first generation and VS series. It provides a natural path for migration to the users of the older DLT tape versions who want to upgrade.
The SDLT tape has powerful and advanced features to facilitate its users. Several advancements have been made and new features added in the Super DLT tape format in comparison to its predecessor Digital Linear Tape format. SDLT tape format has enhanced tape formulations, channel recording technologies and head design. New technology “Laser Guided Magnetic Recording LGMR” is incorporated in the SDLT tape format. By the LGMR technology, both the technologies of magnetic and optical are combined. So, as a result high storage capacity is enabled on half inch data tape cartridge.
The data in SDLT tape cartridge records magnetically on tape’s recording side. The tape’s backside is the non recording side on which servo optical tracks are embedded that help in tracking. The DLT tape has the tape formulation of “Metal Particle MP”, while the SDLT-1 tape format has the “Advanced Metal Particle AMP” media. SDLT 1 tape format can store high density data because of its new technology of metal particle. eMP60 formulation is utilized by the SDLT-II media therefore, it additional features than the AMP media which further enhances the performance. eMP60 technology’s advancements include magnetic strength that over time limits the “magnet loss” and hence enables high recording density,
The SDLT cartridge offers itself advancements to DLT data tape cartridge. The Super DLT tape cartridge has structural changes like the “structural ribbing” and “internal circular wall”. Both of these structural changes protect the SDLT cartridge from potential damage if jarred or accidentally drops. When we compare the DLT and the SDLT tape format, the Super DLT backup tape format has enhanced features including the high efficiency channel of Partial Response Maximum Likelihood (PRML), Pivoting Optical Servo (POS) and the Magneto Resistive Cluster (MRC) heads. The MRC heads are densely packed therefore, they form a cluster. The benefits of this arrangement of MRC heads are increased track densities, enhanced transfer speed, more resistance to humidity and temperature.
Partial Response Maximum Likelihood is hard drive storage mechanism. During the read back the PRML differentiates from noise the valid signal. PRML does not look at the signal peak; instead it looks at the entire waveforms. On the hard drive, sophisticated sampling of the digital signal is employed by the PRML. PRML then processes and detects the digital signal for manipulation of the analog “data stream” that comes from the disc, this is the partial response (PR) component. PRML then determines the most suitable bits sequence and afterwards reconstructs accordingly, this is the maximum likelihood component.
For more details and online order, please visit www.tape4backup.com
About the Author
ShawnPaul
Tape4backup.com,
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What the heck is DLT tape and who would use it for what?
I saw the other day as I was browsing for parts a new dlt tape drive being sold by walmart. It was over $600! I looked it up on Wikipedia and apparently its been around for a long time but there wasn't much there.
I have never heard of this in my life. Tape drives for computers?
1. What kind of Business or people do or would use these things and for what?
2. Why are these things so expensive? They can go above $1000.
3. Are the new ones backwards compatible with the oldest ones from the 80's? What would be on them?
http://www.walmart.com/ip/Quantum-BH2AA-BR-Value-DLTtape-DLT-VS160-Internal-Tape-Drive/13214924
http://en.wikipedia.org/wiki/Digital_Linear_Tape
They WERE for backing up servers in large data centers. Since then, new kinds of tapes, such as LTO are used. The drives are still expensive because it isn't just like a single tape drive. Many of them have autoloaders... like robotic arms that allow you to put several tapes into one drive, and then it'll switch to a new tape automatically when one gets full. Others have even cooler features that automatically tell you what's on the tape via a barcode reader. And, to oversimplify, some of them are really really big... like the size of a walk-in closet with tapes all over the wall, and an actual robot drives around inside picking tapes and inserting them into the drive as necessary.
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