DLT

Short for Digital Linear Tape, DLT is a technology initially developed by Digital who later sold the technology to Quantum. DLT  helps address storage capacity and access time when backing up information to tape drives by increasing the total capacity and speed of the tape drive and disks.

SDLT, or Super Digital Linear Tape, is a variant of DLT that was developed later and increased the overall capacity, doubling the capacity of disks and allowing up to 300GB to be stored.

Also see: Tape drive definitions