StorageWorks Solutions BA353-Ax Desktop Expansion Unit U. G.

This document is the "StorageWorks BA353-Ax Desktop Expansion Unit User's Guide" (Order Number: EK-BA353-UG. C01).

It serves as a comprehensive guide for the BA353-Ax StorageWorks desktop expansion unit. The manual is divided into two main parts:

Part I: Desktop Expansion Unit User's Guide This section covers the unit's features, configurations, operations, and installation. Key topics include:

• Overview: Describes the low-profile, SCSI-based unit capable of accommodating either two 3½-inch StorageWorks Building Blocks (SBBs) and one 5¼-inch half-height storage device, or three 3½-inch SBBs. It highlights power and cooling, and typical installation.
• Configuration: Details standard configurations, power cord, and SCSI cable requirements, including cable types, lengths, and bus limitations (e.g., maximum length, device count, unique SCSI IDs).
• Operations: Explains the power supply, cooling fan, status indicators (LEDs for the unit, SBB activity, and device faults), SCSI bus termination, and device addressing via switches.
• Installation: Provides procedures for physical installation, connecting power and SCSI cables, and installing/replacing 3½-inch SBBs and 5¼-inch half-height storage devices. It defines "hot-swap," "warm-swap," and "cold-swap" replacement methods, emphasizing cautions for electrostatic discharge (ESD) and overheating.

Part II: Desktop Expansion Unit Service Guide This part is intended for trained personnel (e.g., Digital Multivendor Customer Services representatives). It describes the procedures for converting slot 3 of the desktop expansion unit to accept either a 5¼-inch half-height storage device or a 3½-inch SBB by modifying internal components like the movable backplane connector and adding side rails.

Appendices The manual also includes an appendix detailing the physical, electrical, cooling, environmental, and thermal stabilization specifications for the BA353-Ax desktop expansion unit and SBBs.

Intended Audience: Personnel responsible for operating, maintaining, and installing the StorageWorks desktop expansion unit. Procedures in Part II are specifically for qualified service personnel.