
Galaxy GHDX-2422S-8+12F4D Installation and Hardware Reference Manual
Subsystem Monitoring
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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
no erroneous condition is detected.
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. The preset value
for event notification can be changed using the firmware-embedded configuration
utility, while the fan speed trigger is not a user’s option. Please refer to the
Generic Operation Manual for the options with event notification values.
1.3. Subsystem Monitoring
The SATA-based RAID subsystems come with a number of different monitoring
methods that provide you with continual updates on the status of the system and
individual components. The following monitoring features are included in the subsystem.
1.3.1 I
2
C bus
The following subsystem elements interface to the RAID controller over a non-user -
serviceable I
2
C bus:
♦ Power supply status
♦ Cooling module
♦ Temperature sensors on the backplane and within the RAID controller module
1.3.2 LED Indicators
The following active components all come with LEDs that indicate the status of the
individual components:
• RAID controller
• LCD panel
• Cooling module
• PSU module
• BBU module
• Drive trays
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