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 DDS Definition
We define DDS |
DDS - A storage standard used with medium cost tape media and tape drives, used mainly for small businesses and departmental backups. DDS tapes are the same size and form factor as DAT tapes used to store music digitally on tape media, but DDS media is more robust and more expensive. There are four different DDS standards: DDS-1 through DDS-4. The four standards allow for backup of 2 GB, 4 GB, 12 GB, and 20 GB worth of uncompressed (native) storage respectively. Storage sizes are typically listed as double for compressed data. DDS media is good for up to 10 years, but should not be used for more than 100 backups or it may become unreliable. DDS tapes are falling to the wayside as DLT, AIT, and other standards offer higher reliability. Sony and HP have both announced that they will not be supporting DDS-5, which pushes DDS data storage up to 40 GB of native storage per tape. |
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