RM80 Disk Subsystem Slide Notes

This document, titled "RM80 DISK SUBSYSTEM SLIDE NOTES," introduces the RM80, Digital's first fixed media Winchester Technology disk drive.

Key features and benefits of the RM80 include:

• Technology: It utilizes Winchester Fixed Media Technology, providing 124 MByte formatted capacity, improved recording densities for a lower price/MByte, and enhanced performance. It's also Microprocessor Controlled.
• Performance: Offers leadership performance for a medium-capacity drive with a 33.3 ms average access time (faster than the RM03). Its Head Disk Assembly (HDA) features a Clamshell Architecture for stiffness, lightweight head suspension, and a rotary actuator for reduced access time.
• Reliability & Data Integrity: Achieves superior reliability and data integrity through its sealed media concept, improved head design, high MTBF, and automated self-tests that run during power-up, detecting problems early.
• Maintainability & Serviceability: Designed for "intelligent module replacement" with on-board diagnostics (including fault isolation via thumbwheel switches and LED indicators, independent of the host computer), hinged circuit modules for easy access, and a slide-out drive bus adapter. Crucially, it requires no scheduled preventive maintenance by Digital personnel, with only periodic customer inspection/maintenance of its easily accessible foam air filter.
• Compatibility: It can attach to VAX 11/750 and VAX 11/780 systems.

In essence, the RM80 is presented as a high-performance, highly reliable, and exceptionally maintainable disk drive designed for ease of use and maximum system availability.