User guide

Getting Started
15
Chapter 2
Getting Started
2.1 Introduction
In this chapter, you are shown how to install your Galaxy 55 Enclosure and plug-in modules into an industry
standard 19 inch rack cabinet.
Caution When connecting up the Galaxy 55 subsystem, use only the power cords supplied or cords which match
the specification quoted in section 1.5.4.
2.2 Planning Your Installation
Before you begin installation you should become familiar with the configuration requirements of your Galaxy 55
system, detailed in Table 2–1. The correct positions of each of the optional plug-in modules are shown in Figure 2–
1. Please refer to section for details of FC-AL configurations and installation.
Table 2–1 Galaxy 55 Configuration
Module Location
Drive Bays ALL drive bays must be filled with either a drive carrier module or a front dummy
fascia, no bays should be left completely empty.
Power Supply/Cooling
Modules
See Table 2-2
• Single Power Supply/Cooling module: if redundancy is NOT required and the
installed disk drives are low power, a single Power Supply/Cooling module must
always be fitted to rear Bay 2.
Single modules with a full compliment of drives will limit:
– the maximum operating temperature of the enclosure.
• Two Power Supply/Cooling modules: full power and cooling redundancy is
provided while a faulty module is replaced. Install the Power Supply/Cooling
modules in rear Bays 1 & 4. Refer to Table 2–2 for details of limitations
• Three Power Supply/cooling Modules: full power and cooling redundancy with
high power drives is maintained while a faulty module is replaced. Install the
modules in bays 1, 2 and 4.
I/O Modules The Primary Module must be fitted in Bay 3/2. A second module (providing a second
loop path to all drives) may be fitted in Bay 3/3.