User`s guide

Chapter 1 Introduction and Quick Start Installation
Features
DDS-4/DAT 72 User’s Guide 3
Features 1
The following list summarizes the key features of the DDS-4 and DAT 72
drives.
•Compatibility
• DDS-4: Supports DDS-2, DDS-3, and DDS-4 recording formats.
• DAT 72: Supports DDS-3, DDS-4, and DDS 5th Generation
recording formats.
• LVD / Ultra Wide SCSI connection
• Three convenient form-factors:
• 3.5-inch internal form-factor for installation in a 3.5-inch half-
height space
• 3.5-inch half-height drive factory-installed with 5.25-inch
mounting rails and bezel for installation in a 5.25-inch half-height
space
• External subsystem with built-in, auto-sensing, worldwide
power supply
• Support for various native data-storage capacities (see table 1
)
• High-speed transfer rates for fast backups (see table 1
)
• Advanced onboard DDS-DC hardware using Lempel-Ziv (DCLZ)
data-compression, doubling the drive’s uncompressed capacity (that
is a 20 GB uncompressed drive can be 40 GB with compression) (see
table 1
).
• 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 1015 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