Features

DDS-4 is the 4th generation of DDS products from Sony.  DDS-4 has all the benefits of previous DDS products, with improved features to increase your storage value. All previous archived DDS data is now even more accessible with read and write backward capability from the SDT-10000 family of tape drives.

Sony has incorporated the Super Air Flow Environment (SAFE) airflow design in the DDS-4 tape drive.  The SAFE design directs external airflow outside the drive and also efficiently vents the tape path area, dramatically improving dust-prevention and cooling.  The SAFE design, in conjunction with Sony's patented Super Head Cleaner, prevents particle accumulation on the heads to minimize read/write errors, ensuring your data will be accessible when you need it. 

With 20 GB of native capacity, DDS-4 is the perfect solution for the growing Windows NT and Unix platform requirements.  The transfer speed of DDS-4 has been double from Sony's DDS-3 family of products to 2.4 MB/s, providing a typical back-up rate of 8.64 Gigabytes per hour.  Data flow with Sony's DDS-4 drive is further enhanced with out Look Aside buffer management design.  A total combined buffer memory of 10 MB allows data to stream faster and compress quicker to keep up with your growing storage requirements.

Specifications

Drive type
3.5" 4mm DDS-4 tape drive

Media
150 meter DDS-4 compatible data cartridge
125 meter DDS-3 compatible data cartridge
120 meter DDS-2 compatible data cartridge
90 meter DDS compatible data cartridge
60 meter DDS compatible data cartridge

Compatibility
Read/Write Compatible with DDS, DDS-2, DDS-3 
and DDS-4 Format and Media

Interface
Ultra SCSI, Single-Ended, Low Voltage Differential (LVD)

Capacity
20 Gbyte with 150 meter data cartridge (native)
40 Gbyte with 150 meter data cartridge (assuming 2:1 data compression)

Sustained Transfer Rate
2.4 MB/sec (native)
4.8 MB/sec (assuming 2:1 data compression)

Burst Transfer Rate
Asynchronous 14 Mbyte/sec (max.)
Synchronous 40 Mbyte/sec (max.)

Linear Recording Density
122 KBPI

Recording Block Length
Variable or fixed block length supported

Access Time
Less than 55 seconds with 150 meter data cartridge

Search Speed
360 MB per second

Drum Rotational Speed
8503 RPM

Buffer Size
10 Mbyte

Uncorrectable Error Rate
Less than 10^-15 bits 

MTBF
250,000 power-on-hour at 40% duty cycle

Vibration
0.25 G peak, 5 to 500 Hz (swept)

Shock
5.0 G peak half sine wave of 3ms duration

Temperature
Operating: 41°F to 104°F (5°C to 40°C)
Storage: -40°F to 158°F (-40°C to 70°C)

Operating Humidity
20% to 80% (non-condensing)
Max wet bulb temp.: 26°F

Power Requirements
DC 5V ± 5%
DC 12V ± 10%

Power Consumption
Internal: 8.0 watts (average)

Dimensions (H x W x D)
Internal: 3.5" x 4" x 5.75"

Weight
Internal: 1lb. 4.8 oz
.