DIGITAL DATA STORAGE (DDS) OXFORDSHIRE UK
Digital Data Storage (DDS, DDS-1, DDS-2, DDS-3, DDS-4)
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. DAT was created for CD-quality audio recording.
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.
|
Format |
Date |
Tape width |
Track pitch |
Tape length |
Native capacity |
Capacity assuming |
|
DDS-1 |
1989 |
3.81 |
13.6 |
60/90 |
1.3/2.0 |
2.6/4 |
|
DDS-2 |
1993 |
3.81 |
9.1 |
120 |
4.0 |
8 |
|
DDS-3 |
1996 |
3.81 |
9.1 |
125 |
12.0 |
24 |
|
DDS-4 |
1999 |
3.81 |
6.8 |
150 |
20.0 |
40 |
|
DAT-72 |
2003 |
3.81 |
5.4 |
170 |
36.0 |
72 |
|
DAT-160 |
2007 |
8 |
6.8 |
154 |
80 |
160 |
|
DAT-320 |
2009 |
8 |
153[2] |
160 |
320 |
|
|
(Gen 8) |
cancelled |
8 |
~300 |
~600 |
·
DDS-1
Stores up to 1.3 GB uncompressed (2.6 GB compressed) on a 60 m cartridge
or 2 GB uncompressed (4 GB compressed) on a 90 m cartridge. The DDS-1 cartridge often does not have the
-1 designation, as initially it was the only format, though cartridges produced
since the introduction of DDS-2 may carry a -1 designation to distinguish the
format from newer formats. A media recognition system was introduced with DDS-2
drives and cartridges to detect the medium type and prevent the loading of an
improper medium. From 1993, DDS-1 tapes included the media recognition system
marks on the leader tape—a feature indicated by the presence of four vertical
bars after the DDS logo.
·
DDS-2
Stores up to 4 GB uncompressed (8 GB
compressed) on a 120 m cartridge.
·
DDS-3
Stores up to 12 GB uncompressed (24
GB compressed) on a 125 m cartridge.
·
DDS-4
DDS-4 stores up to 20 GB uncompressed
(40 GB compressed) on a 150 m cartridge. This format is also called DAT 40.
·
DAT 72
DAT 72 stores up to 36 GB uncompressed (72 GB compressed) on a 170 m
cartridge. It has the same form-factor as DDS-3 and -4 and is sometimes
referred to as DDS-5.
·
DAT 160
DAT 160 was launched in June 2007 by HP, stores up to 80 GB uncompressed
(160 GB compressed). A major change from the previous generations is the width
of the tape. DAT 160 uses 8 mm wide tape in a slightly thicker cartridge
while all prior versions use 3.81 mm wide tape. Despite the difference in
tape widths, DAT 160 drives can load DAT-72 and DAT-40 (DDS-4) cartridges.
·
DAT 320
In November 2009 HP announced the DAT-320 standard, which stores up to
160 GB uncompressed (marketed as 320 GB assuming 2:1 compression) per
cartridge.
OUR SERVICES WITHIN AUDIO
Audio Post Production
We support our clients in creating and delivering digital media support through creative processes to bring together the best out of your Audio footage. Our post production staff can piece together your audio projects ready for marketing.
Vinyls LPS 78's Voice O Graphs
Professional studio quality vinyl transfers to WAV, MP3 or AIFF files. From rare 78's, LPs, EPs, Albums, Voice O Graph we can convert using our Pro-Tools set up and prepare stunning audio transfers.
Audio Tape Cassettes
Professional audio tape transfers to include micro cassettes. From 1 unit to the 100's. To CD or digital files. Printed CDs of family photos can ensure a beautiful bespoke present. Perfect for corporate or private clients.
Audio DAT Tapes
Digital Audio Tape (DAT or R-DAT) is a signal recording and playback medium developed by Sony and introduced in 1987. Like most formats of videocassette, a DAT cassette may only be recorded and played in one direction, unlike an analog compact audio cassette.
