Galaxy Raid GHDX2-2430S-16U4D Installation and Hardware Reference Manual
1-10
Subsystem
Components
1.3.8 Cooling Modules
Figure 1-11: Cooling Module
PN: GAL-9273ECFanMod
The subsystem is equipped with two (2), dual-fan, redundant cooling
modules. They are installed in the cooling module bays located in the rear
section of the PSU modules (see
Figure 1-11
.) Two (2) LEDs on the rear
panel indicate the cooling fans status.
Intelligent Dual Speed Operation
The cooling fans in the cooling module operate with two rotation speeds.
Under normal operating conditions, the cooling fans run at the low speed,
which is sufficient for maintaining efficient airflow across components.
Under the following conditions, cooling fans raise their rotation speed to
increase the airflow:
1.
Component Failure: if one cooling fan, a PSU, or a temperature
sensor fails, the remaining cooling fans automatically raise its
rotation speed.
2.
Elevated Temperature: if the temperature reading breaches the
upper threshold set for any of the interior temperature sensors, the
cooling fans automatically raise its rotation speed.
3.
During the subsystem initialization stage, the cooling fans operate
at the high speed and return to lower speed once the initialization
process is completed and that the subsystem has not discovered any
erroneous conditions.
NOTE:
There are two values set for the upper temperature thresholds. One is set
for event notification and the other triggering higher fan rotation speed.
