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Online Computer Terms Dictionary - D

Digital Linear Tape

<storage> (DLT) A kind of magnetic tape drive originally developed by DEC and now marketed by Quantum.

DLT drives implement the Digital Lempel Ziv 1 (DLZ1) compression algorithm in a combination of hardware and firmware. They use a popular chip by Stac (now hi/fn) to do the string searching. Counting, sorting and Huffman encoding are done in firmware (with hardware support for the Huffman algorithm?).

In April 1997 DLT drives can transfer 5 megabytes per second and can store 35 gigabytes on a single cartridge. Compression might roughly double these figures.



Nearby terms: Digital Express Group, Inc. Digital Lempel Ziv 1 Digital Library Initiative Digital Linear Tape digital logic Digital Multimeter Digital Radio Mondiale