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Product Information                                                                                                                                                                 High-Tech #T40Q558     Dependable Tape Backup for Mid-Range and High-End Computer Systems
Quantum DLT 4000 half-inch cartridge tape drives are designed for heavy duty-cycle computer applications in the mid-range to high-end of the tape drive market. The DLT 4000 tape drives offer an unparalleled combination of 20 gigabytes (GB) native per cartridge and a native transfer rate of 1.5 megabytes (MB) per second. A five- or seven-cartridge random access autoloader is offered, providing unattended back-up of up to 140 GB* of data.
 
     *Native
 

The Market
In today's fast-paced, information-based society, preserving and protecting data is vital for virtually every institution. This is especially true with today's high-speed, high-capacity, mid-range computers; high-end workstations; and high-volume network servers. To meet the crucial data backup needs of these powerful systems, Quantum developed the DLT 4000 half-inch cartridge tape drive family. With advanced linear recording technology and a precision tape guidance system, DLT  4000 drives meet the challenge with ease.
 
A Perfect Combination of Performance and Capacity
In data backup, speed and capacity are paramount. Quantum DLT 4000 drives deliver both with a sustained native transfer rate of 1.5 megabytes (MB) per second and a native capacity of 20 gigabytes (GB). This combination provides an effective backup solution for high-end workstation, server, and network backup requirements.
 
Engineered for Performance and Reliability
To ensure outstanding performance with unquestionable reliability, Quantum DLT 4000 drives employ many advanced design features. For instance, they utilize a dual-channel read/write system to maximize performance. To ensure the fastest-possible access times, DLT 4000 drives use a unique tape mark directory.
The drives also support high-efficiency data compression and compaction to deliver maximum performance and capacity. Adaptive cache buffering optimizes operation with varying host transfer rates.
 
Quantum Reliability and Data Integrity
Like all Quantum products, Quantum DLT tape drives set the standard for quality and reliability. The inherent design of DLT technology produces high durability in heavy-duty commercial applications. To ensure customer data integrity, the drive also features Reed Solomon Error Correction Code, a 64-bit Cyclical
Redundancy Check (CRC), and parity checking on the SCSI bus and internal data path. This high level of precision and reliability is why you can always trust
your data to a Quantum drive.
 

Product Specifications
Performance Specifications
Sustained Transfer Rate (MB/sec)
   Native                                       1.5
   Compressed                               3.0*
Burst Transfer Rate (MB/sec)
    Synchronous                             10
Formatted Capacity
    Native                                      10
    Compressed                              40*
Average File Access (sec)             68
 
Interface                                       SCSI-2 Fast (Single-Ended or Differential)

Tape Format Specifications
 Recording Format                         128 track serial serpentine
Recording Density                          82 kbits per inch
Track Density (tpi)                         256
Encoding Method                           RLL 2,7
Data Compression                          DLZ

Reliability Specifications
MTBF                                           200,000 hours
Head Life                                      10,000 hours
Media Durability                             1 ,000,000 passes (15,000 uses)
Uncorrected Error Rate                   1 x 1017 bits read
Undetected Error Rate                    1 x 1027 bits read
Warranty (years)                            3

Physical Specifications
Dimensions — inches (mm)
    Height                                         3.25 (82.5)
    Width                                          5.75 (144.8)
    Length                                         9.0 (228.6)
Weight — pounds (kg)                      5 (2.27)

Environmental Limits
Operating
    Temperature oF (oC)                     50 to 104 (10 to 40)
    Non-Condensing Humidity (%)       20 to 80
    Altitude (maximum)                       8,000 ft.

Non-Operating
    Temperature oF (oC)                    -40 to 151 (-40 to 66)
                                                        excluding media 
    Non-Condensing Humidity (%)      10 to 95
    Altitude (maximum)                      30,000 ft.

Power Specifications
Voltage                                            +5V, +12V
Power Consumption (typical)             25 watts

Media/Format Compatibility
DLTtape III                                      2.6, 6, and 10 GB native capacities
DLTtape IIIXT                                 15 GB native capacity
DLTtape IV                                      20 GB native capacity
DLT Cleaning Tape                           20 uses
Read/Write Compatible With All Previous DLT Formats

Tape Life
Archive Storage                                 More than 30 years with less than 5% loss in demagnetization (at 20oC and 40% non-condensing humidity)
Durability                                           Average 1,000,000 head passes in typical office/computer environment
 
* Actual transfer rate and capacity will vary depending on data.

Quantum DLTtape Media Cartridges
Approved for use in all DLT tape drives and autoloaders, Quantum DLTtape half-inch cartridge tapes are backed by a limited lifetime warranty.
 
 

HTCE Product ID #T40Q558

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