Sun Microsystems StorEdge A3000, Manual

Page: 37 / 152

Chapter 1 Product Overview 1-11
1.4 Cooling System
The cooling system for the controller module includes the controller fan, power
supply fan, and ventilation holes.
1.4.1 Controller Fan
The controller fan (
FIGURE 1-10
) is a single, removable canister that contains two
cooling fans and the circuitry for the system-level LEDs. The dual fans provide a
redundant cooling system to both controller canisters. If one fan fails, the other
continues to operate, providing sufficient air circulation, until you can replace the
unit.
The controller fan goes into a slot on the front of the controller module, to the left of
the controllers (
FIGURE 1-3
). The canister has a handle and thumbscrew that enable
you to service the unit. The five LEDs on the left side of the canister provide overall
system status information. See
TABLE 4-1
on page 4-3 for a description of the system-
level LEDs.
FIGURE 1-10
Controller Fan
Cooling fans
Thumbscrew
Handle
Ventilation holes
System-level LEDs