Digital TU81-Plus Tape Drive

Digital TU81-Plus 9-Track Tape Drive – Dual-Density Magnetic Storage System

The Digital TU81-Plus is a high-performance 9-track tape drive designed for reliable magnetic data storage and archival in DEC computing environments. With dual-density support for both GCR and PE recording formats, this unit is compatible with a range of systems and ideal for backup, data transfer, and long-term archival applications. Can not be powered on or tested. Purchaser responsible for alignment, maintenance and repairs if required.

Key Features:

• Model: TU81-Plus

• Manufacturer: Digital Equipment Corporation (DEC)

• Recording Formats: GCR (6250 bpi) and PE (1600 bpi)

• Storage Capacity:

  • GCR: Up to 140 MB

  • PE: Up to 40 MB

• Data Transfer Rates:

  • GCR: Up to 469 KB/s

  • PE: Up to 120 KB/s

• Tape Speed:

  • Low Speed: 25 in/s

  • High Speed: 75 in/s

• Interface Support: Compatible with Unibus, Q-Bus, and VAXBI configurations

• Buffer Memory: 256 KB

• Physical Dimensions:

  • Height: 41.7 in

  • Width: 21.5 in

  • Depth: 30 in

  • Weight: Approx. 350lbs

• Power Requirements: 300–550 VA depending on load

Common Applications:

• VAX and MicroVAX system backup

• Data archiving for legacy systems

• Scientific and industrial data storage

• Tape-based data transfer in high-reliability environments

Purchaser responsible for any alignment, maintenance or repairs if required.