Tlz04 Tape Drive - DEC VAX 4000 300 Manual

3.1.4 TLZ04 Tape Drive

The TLZ04 tape drive is located behind the upper door of the system. To
use the drive, move the key to the top position and open the door.
The TLZ04 tape drive is a backup device that uses digital data storage
(DDS) and digital audio tape (DAT) recording technologies. Digital audio
tape, such as TLZ04 cassettes, takes advantage of the TLZ04 tape drive's
helical scan technology. This technology allows more data to be stored
on tape by recording data diagonally. DAT recording also minimizes
''crosstalk,'' providing you with higher data integrity.
Digital data storage uses a recording format that supports the use of digital
audio tape for computer applications. The DDS/DAT format allows you to
backup 1.2 gigabytes of data in approximately 2 hours with no operator
intervention. In addition, this format has three levels of error correction,
which ensures high data integrity.
3–30 VAX 4000 Model 300 Operation