SF100 Storage Array

This installation guide outlines the procedures for setting up the SF100 storage array and its optional SF72 storage enclosure. The SF100 is a compact storage solution, designed as an alternative to the SF200, compatible with conventional AC power, and requiring no special site preparation. It consists of an upper compartment housing a factory-installed TF857 magazine tape subsystem and a lower compartment for an optional SF72 storage enclosure, which can be installed at the factory or on-site by engineers. The array supports various data management functions, including software distribution, high-speed data set management, and data interchange.

Key aspects covered in the guide include:

• SF100 Overview and Specifications: A detailed description of the SF100's components, available product options (including cable kits for different VAX/MicroVAX systems), and technical specifications such as data backup capacity (18.2 GB with TF857, up to 4 GB with SF72), performance, power requirements, weight, dimensions, environmental conditions, and EMI/safety certifications.
• Installation Guidelines: Instructions for installing the SF100 storage array, emphasizing electrostatic discharge (ESD) precautions, verifying package contents, and inspecting for damage. It details the types of DSSI (Digital Storage System Interconnect) cables and terminators for various systems (DSSI Pin-Socket and DSSI Micro-Ribbon) and provides crucial configuration guidelines. These guidelines include the necessity of terminating both ends of a DSSI bus, support for up to 8 DSSI nodes (adapters and integrated storage elements, ISEs), typical DSSI node ID assignments (e.g., tape ISEs often use ID 0), and recommendations for a common AC power source and ground strap use.
• Cabling Procedures: Step-by-step instructions and diagrams for connecting the SF100 in both single-system and DSSI VAXcluster configurations, with a critical reminder to power down the system before installing DSSI cables.
• TF857 Subsystem Verification: Information on verifying the operation of the TF857 magazine tape subsystem. This includes checking the DSSI node ID (usually preset to 0), performing Power-On Self-Tests (POST) for the loader transfer assembly, tape drive, and controller module, and utilizing local diagnostic programs such as PARAMS (for managing parameters), LDRTST (for loader functionality), and DRVTST (for comprehensive tape drive testing).
• SF72 Storage Enclosure Installation: Procedures for installing the optional SF72 enclosure, which involves preparing the SF100 array by removing panels, installing a slide mount assembly, attaching chassis retainers, and carefully sliding the SF72 into place. It also covers verifying SF72 DSSI ID switch settings for unique identification on the bus, installing the Operator Control Panel (OCP), checking line voltage, connecting power, and executing the power-on sequence with indicator checks.
• Troubleshooting: A comprehensive troubleshooting chart that lists common symptoms encountered during SF72 installation, their probable causes (e.g., faulty cables, modules, conflicting DSSI IDs, power issues), and recommended corrective actions. It also mentions the use of a DSSI bus meter for diagnostics.

The document is intended for Digital Services engineers responsible for the installation of this equipment.