DLT2000 Cartridge Tape Subsys/DLT2700 Mini-Library Prod Manual

This document is the Product Manual for the Digital Equipment Corporation DLT2000 Cartridge Tape Subsystem and DLT2700 Mini-Library, first published in November 1993.

Product Overview:

• DLT2000 Cartridge Tape Subsystem: A high-performance, high-capacity streaming cartridge tape drive (5.25-inch form factor, half-inch tape) designed for midrange and high-end computing systems. It features Digital Lempel-Ziv (DLZ) data compression, a dual-channel read/write head, and tape mark directory.
• DLT2700 Mini-Library: A tape mini-library that automates tape operations, including a DLT2000 drive and a 7-cartridge SCSI-2 medium changer device (loader).

Key Features:

• Fast Data Transfer Rate: Up to 1.25 MB/s (non-compressed) and 2.5 MB/s write / 3 MB/s read (compressed).
• High Capacity: 10.0 GB native or 20.0 GB compressed per cartridge for DLT2000. The DLT2700 can provide unattended backup of up to 140 GB.
• Data Compaction: Utilizes a 2.0 MB read/write data cache for efficient data storage.
• Strong Media: Tape media designed for 500,000 passes and a 10-year shelf life.
• Compatibility: Supports 2.6, 6.0, and 10.0 GB tape formats for interchangeability with earlier DLT drives.
• Firmware Update Capability: Features Flash EEPROM for easy on-site microcode updates from tape.
• Embedded Diagnostics: Includes diagnostic software for head cleaning indications, diagnostic results, and drive operating status, with error data logging for failure analysis.

Manual Content: The manual provides comprehensive instructions on:

• Installation and Configuration: For both the DLT2000 tabletop drive and the DLT2700 mini-library, including SCSI ID and parity settings, cable connections, and Power-On Self-Test (POST).
• Operation: Detailed descriptions of front panel controls and indicators, density selection, loading and unloading cartridges, and using cleaning tapes.
• Troubleshooting: Guides for addressing common problems, magazine faults, loader faults, and power issues.
• Firmware Update Procedures: Steps to update the firmware from tape for both drive-only and drive-and-loader configurations.
• SCSI Interface: A highly technical section detailing the SCSI protocol features implemented by the DLT2000 tape subsystem, including supported commands, messages, and error recovery procedures, crucial for system integrators.
• Technical Specifications: Comprehensive data on physical dimensions, performance, power requirements, environmental conditions (temperature, humidity, vibration, shock, EMI), regulatory compliance, and drive reliability factors.

Intended Audience: This manual is intended for subsystem or system integrators and users of the DLT2000 series tape cartridge products.