User's Manual

Chapter 1 Introduction
Page 4 STT20000A Product Manual
Features
The STT20000 SCSI minicartridge drive embodies Seagate 's commitment to
engineer reliable and durable tape drive products. In summary form, key features of
the drive are as follows:
• Internal form factor for installation in a 5.25-inch half-high or 3.5-inch by one-
inch space
• Capability to write and read Travan TR-5 (QIC-3220-MC)
• QIC-3220-MC tape format compliance for compatibility and information
interchange
• Typical uncompressed capacities of up to 10 gigabytes on 740 foot TR-5 media
• Typical compressed capacities of up to 20 gigabytes on 740 foot TR-5 media
• Transfer rate optimized with FastSense
TM
—automatic selection of fastest
supportable data transfer rate (1,000, 733, or 489 Kbyte/sec)
• Single-ended SCSI connection with these features:
• Embedded full LSI, high speed SCSI controller
• Software selectable synchronous or asynchronous SCSI data transfer
• High performance SCSI burst transfer rate of 5 Mbyte/sec with 512 Kbyte (2
Mbyte on the STT20000N-C NS-20 drive) on-drive data buffer to facilitate the
most efficient use of the host computer and tape drive
• Reed-Solomon ECC (error correction code) with un-correctable error rate of less
than 1 in 10
15
bits
• Flash EEPROM to enable electrically upgradable drive firmware
• Custom Seagate -designed LSI circuitry to reduce component count and boost
drive reliability
• Low power consumption- less than 15.0 Watts (typical) for internal drives
• Extensive set of motion commands that enables the drive to support either
streaming or file-oriented dump and restore modes
• Compatibility with a wide range of PCs