Quantum DAT72 Autoloader

The DAT 72 drives combine established DAT technology, high-density recording and hardware data-compression capability along with Seagate’s proven computer-grade design to provide unmatched reliability and performance characteristics among DDS products.

Features

The following list summarizes the key features of the DAT 72 autoloader drives.

Compatibility

• DDS-4: Supports DDS-2, DDS-3, and DDS-4 recording formats.

• DAT 72: Supports DDS-3, DDS-4, and DAT 72 recording formats.

• Support for various native data-storage capacities

• High-speed transfer rates for fast backups

• Advanced onboard DDS-DC hardware using Lempel-Ziv (DCLZ) data-compression, doubling the drive’s uncompressed capacity (e.g., a 20 GB uncompressed drive can be 40 GB with compression)

• High-performance SCSI burst transfer rates

• Three levels of error-correction code (ECC) and four-head design for read-after-write (RAW) error detection and correction (uncorrectable error rate of less than 1 in 10 15 bits)

• “Flying” preamplifier for greater signal-to-noise ratio

• Flash memory to store setup parameters and enable field firmware upgrades

• Automatic Power On Self Test

• State-of-the-art sealed drive mechanism and tape handling components for improved immunity to airborne contaminants and extended media life.

Data Storage Capacity: 36 Gbytes (72 Gbytes compressed)

Native Transfer Rate:3.5 Mbytes per second (7.0 Mbytes per second compressed)

The DAT 72 drives are ideal for workstation, server, and network/enterprise applications such as:
• Backup of high-capacity fixed discs

• Data interchange between systems

• Network servers

• Loader products

• Online data collection

• Near-line secondary storage for text, graphics or multimedia information of all types

• Archival storage

The DAT 72 drives represent Seagate’s commitment to reliable engineering and durable tape drive products that implement leading-edge technology.

Key features of the drives include:

• A platform based on state-of-the-art sealed drive mechanism and tape-handling components for improved immunity to airborne contaminants and extended media life

• Three available form factors: 3.5-inch internal for installation in a 3.5-inch halfheight space; 3.5-inch drive with factory-installed 5.25-inch mounting rails and bezel for installation in a 5.25-inch half-height space; and external subsystem with built-in, auto-sensing, worldwide power supply

• ANSI/ECMA compliance and capability to write and read DDS 5th
Generation (DAT 72 only) DDS-4, DDS-3, and DDS-2 (DDS-4 only) cartridges

• Advanced onboard DDS-DC hardware using Data Compression Lempel-Ziv
(DCLZ) data-compression algorithm

• High-speed transfer rates for fast backups

DDS-4:

– 2.75 Mbytes per second typical—uncompressed data

– 5.5 Kbytes per second typical—compressed data

DAT 72:

– 3.5 Mbytes per second typical—uncompressed data

– 7.0 Kbytes per second typical—compressed data

• High-performance SCSI burst transfer rate of 10 Mbytes per second asynchronous and 80 Mbytes per second synchronous

• Flash memory to store setup parameters and enable field firmware upgrades

• Four-head design with RAW error detection and rewrites

• Three levels of ECC to ensure data integrity

• Uncorrectable error rate of less than 1 in 1015 bits

• LVD / Ultra Wide SCSI connection

• Automatic power-on self-test

• Support for TapeAlert™ Certified Solutions

Capacity

Compressed Capacity	Up to 432 GB (per drive)
Native Capacity	Up to 216 GB (per drive)
Interface Type	Ultra2 SCSI LVD

Environmental

Min/Max Operating Temp	5 deg C / 40 deg C
Max Operating Humidity	80%
Max Operating Shock	10 Gs
Max Non-Operating Shock	50 Gs
Max Operating Vibration	50 Gs
Max Non-Operating Vibration	.5 G

Performance

Native Sustained Transfer Rate	Up to 165 MB/min
Compressed Sustained Transfer Rate	Up to 330 MB/min
Compressed Backup Speed	Up to 165 MB/min
Buffer Memory Size	Up to 310 MB/min

Chris Whitehead

Chris Whitehead is a tape drive repair and data storage expert based in Reading, Berkshire, providing tape drive repair and data storage solutions across the UK.