HSG80 ACS Solution Software V8.6 for SGI IRIX Installation and Configuration Guide

Chapter 1
Planning a Subsystem
This chapter provides information that helps you plan how to configure the subsystem.
Refer to Chapter 2 when planning the types of storage containers you need.
IMPORTANT: This chapter frequently references the command line interface (CLI). For the
complete syntax and descriptions of the CLI commands, see the Compaq StorageWorks HSG80
Array Controller ACS Version 8.6 CLI Reference Guide.
The following information is included in this chapter:
■ “Defining the Subsystems,” page 1–2
■ “Failover Mode,” page 1–5
■ “Selecting a Cache Mode,” page 1–7
■ “Enabling Mirrored Caching,” page 1–9
■ “The Command Console LUN,” page 1–9
■ “Connections,” page 1–11
■ “Assigning Unit Numbers,” page 1–14
■ “Selective Storage Presentation,” page 1–17
■ “Worldwide Names (Node IDs and Port IDs),” page 1–19