DLT tape canopy wireless cisco refurbished switch DLT TAPE, AIT TAPE, DAT, BACKUP SOLUTIONS Chosen for mission critical systems in U.S. government agencies and the financial industry, DLT tape drives are widely used for rapid backup of network server and workstation data. Also ideal for data-intensive multimedia applications such as DVD mastering, this format offers massive capacity, extremely fast transfer speed, and quick file access. One reason DLT tape is recommended for mission-critical data backup applications is its ultra-low bit error rate of 1 10-17.