Digital Data Storage

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Digital Audio Tape

Media type	Magnetic cassette tape
Encoding	Lossless real-time
Read mechanism	Rotating head
Write mechanism	Rotating head, helical scan
Developed by	Sony
Usage	Data storage
Extended from	Digital Audio Tape
Released	1989; 35 years ago (1989)

Digital Data Storage (DDS) is a computer data storage technology that is based upon the Digital Audio Tape (DAT) format that was developed during the 1980s. DDS is primarily intended for use as off-line storage, especially for generating backup copies of working data.