Sony Storage Media >
DDS Data Cartridge
DDS4 delivers 40GB (compressed)
storage in a tiny standard tape cartridge.
Digital Digital Digital Digital
Data Data Data Data
Storage Storage Storage Storage
DDS lineup - Sony technology makes it possible
A single tiny DDS4 cartridge (DGD150P) holds a massive 20GB of uncompressed data. Key to such high-density
storage is Sony’s helical scan technology, originally developed for video applications.
Outstanding durability and tape travel stability
Sony’s highly durable HCL (High Cross Linkage) binder raises reliability and durability to withstand the stress
of repeated use. In addition, Sony’s RDP mechanism sandwiches the tape between textured sheets to support
smooth tape winding. The cartridge lid is made of strong plastic to protect the tape against accidental drops
or mechanical shock.
Digital Data Tape Cartridge
Digital Data Tape Cartridge
Sony Storage Media
Unique low torque cartridge
As tape winds onto a reel, torque rises along with diameter. To minimize this torque effect in fast-forward and
rewind search modes, Sony uses special designs for the DDS hubs, lower sheet, and lower shell. The shell also
improves overall cartridge strength to minimize potential deformation under external stress.
Thin dual-layer coating technology
Sony DDS3 and DDS4 tapes use a dual-layer coating comprising an
ultra-thin magnetic layer and a nonmagnetic layer. The ultra-thin magnetic
layer provides high output even in the high frequency range essential for
high-density recording. The nonmagnetic layer creates a smooth surface to
support tape travel stability and durability.
Ultra-fine magnetic particles
Although smaller magnetic particles are more difficult to disperse within
the binder, Sony’s high dispersion technology achieves outstanding results
even with ultra-fine particles. The magnetic particles for DDS3 and DDS4
tapes are approximately 0.1um (100nm), but the output value for the
shortest recorded wavelength is 5dB or higher than that of DDS2.
Cleaning cartridge
Sony developed the DGD15CL cleaning cartridge to provide ideal results
for all DDS drives. While maximizing cleaning effectiveness, it minimizes
adverse effects such as head wear. It can be used about 50 times
(depending on the drive).
Super Fine Metal
Non Magnetic Particle Magnetic Layer
>» >
> Aramid Base Film
Back coating
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Ma В Particles — 0.3um
Cleaning Tape
for 4mm DATA Cartridge
Magnetic Material Metal HAD Metal HAD HESA MP++ MP+++
Aramid Aramid
Recording Density 61 kbpi(3 kftpmm) 61 kbpi(3 kftpmm) 61 kbpi(3 kftpmm)
122 kbpi(6 kftomm)
122 kbpi(6 kftomm)
Base Material | PET PET Aramid
Recording Capacity 1.3GB(*2.6GB) 2.0GB(*4.0GB) 4.0GB(*8.0GB)
| Residual Magnetic Flux Density |
400 mT |
250 mT 250 mT 295 mT 390 mT
Coercive Force | 121 kA/m 121 kA/m 130 kA/m 190 kA/m 195 kA/m
Tape Width (mm) | 3.81 3.81 3.81 3.81 3.81
Tape Thickness (um) | 13.0 9.0 6.8 6.8 5.6
Tape Length (m) | 60 91 120 125 150
*Compression ratio 2:1
Dimensions Environmental Requirements
| Cartridge Dimensions (mm) : 73x54x10.5 | Operation Conditions (°F(°C);% RH) : 15-55 (59-131);10-80*
| Weight (g) : 44 (with case)
| Storage Conditions (°F(°C);% RH) : 5-32 (41-89.6);20-60*
Transportation Conditions (°F(°C);% RH) : -40~45 (-40~113);5~80*
*Maximum wet bulb temperature : 79°F(26°C) at no condensation.
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