Digital Storage Products, RZ73 and RZ74 Installation Guide

This document is an Installation Guide for Digital Equipment Corporation's RZ73 and RZ74 Digital Storage Products, both full-height 5.25-inch SCSI-2 disk drives.

Key information provided includes:

• Introduction: Describes the RZ73 (2000 MB, single-ended or differential SCSI-2) and RZ74 (3570 MB, single-ended SCSI-2) drives, and warns about antistatic precautions.
• SCSI Address and Options Selections: Details how to set the SCSI address (0-7), configure spin-up behavior, enable firmware loading, and control onboard LED indicators (busy/fault) using jumpers on the option connector. It also outlines remote control options for external SCSI address selection, LED monitoring, and AC power failure notification. The RZ74 specifically offers a spindle synchronization option.
• SCSI Bus Termination: Explains how to terminate the SCSI bus for both RZ73 (using removable resistor packs) and RZ74 (using active termination), emphasizing that termination is only required for drives at the end of the SCSI bus.
• Power Connections and Requirements: Specifies the need for +5VDC and +12VDC power supplied via a 4-pin connector, along with detailed voltage, ripple, current, and total power specifications.
• Mounting: Provides instructions for physically mounting the disk drive, including orientation, clearance, and screw specifications.
• Summary of Specifications: Offers comprehensive technical and environmental data, including SCSI 50-pin connector assignments, drive functional specifications (e.g., formatted capacity, seek time, transfer rates, rotational speed), and environmental operating conditions (temperature, humidity, altitude).