Digital Data Storage (DDS) is a format for storing and backing up computer data on tape that evolved from the Digital Audio Tape (DAT) technology. In 1989, Sony and Hewlett Packard defined the DDS format for data storage using DAT tape cartridges. Tapes conforming to the DDS format can be played by either DAT or DDS tape drives. However, DDS tape drives cannot play DAT tapes since they can't pick up the audio on the DAT tape.
DDS1: Stores 2GB native (4GB compressed) of data on a 90m cartridge.
DDS2: Stores 4GB native (6GB compressed) of data on a 120m cartridge.
DDS3: Stores 12GB native (24GB compressed) of data on a 125m cartridge. Uses PRML (Partial Response Maximum Likelihood). which eliminates electronic noise for a cleaner data recording. Native transfer speed: 1-1.2mb/sec; 2mb cache.
DDS4: Stores 20GB native (40GB compressed) of data on a 150m cartridge. DDS4 native transfer speed: 2.4-3mb/sec; 8-10mb cache.
DDS5/72: Stores 36GB native (72GB compressed) of data on a 170m cartridge. DDS5 native transfer speed: 3-3.5mb/sec; 8-16mb cache.
All internal drives are available as custom-built Spanstor© drives. Please contact us for your exact requirements.
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