HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide

Planning a Subsystem
1–2 HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and
Configuration Guide
Defining Subsystems
This section describes the terms this controller and other controller. It also presents
graphics of the Model 2200 and BA370 enclosures.
NOTE: The HSG80 controller uses the BA370 or Model 2200 enclosure.
Controller Designations A and B
The terms A, B, “this controller,” and “other controller,” respectively are used to
distinguish one controller from another in a two-controller (also called
dual-redundant) subsystem.
Controllers and cache modules are designated either A or B depending on their
location in the enclosure, as shown in Figure 1–1 for the Model 2200 enclosure and in
Figure 1–2 for the BA370 enclosure.
Figure 1–1: Location of controllers and cache modules in a Model 2200
enclosure
Model 2200 Enclosure
1 ECBs
2 Fans
3 EMU
4 Power
supplies
5 I/O modules
6 Controller A
7 Controller B
8 Cache
module A
9 Cache
module B
CXO6323C
1 1 1 1
2 2 2
3
CXO7365A
5
5
5
5
5
5
4 4
8 9
6
7