Chapter 1: Introduction
GALAXY Monitoring
1-11
1.
Component Failure: if one cooling fan, a PSU, or a temperature
sensor fails, the remaining cooling fan(s) automatically raises its
rotation speed.
2.
Elevated Temperature: if the temperature breaches the upper
threshold set for any of the interior temperature sensors, the cooling
fans automatically raises 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 no erroneous condition is detected.
NOTE:
There are two values sets 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 User’s Operation Manual for the
options with event notification values.
The cooling module specifications are listed in
Appendix B
.
1.3. GALAXY
Monitoring
The GALAXY RAID subsystem comes with several monitoring methods to
give you constant 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 GALAXY elements are interfaced to the RAID controller
over a non-user-serviceable I
2
C bus:
•
PSUs
•
Cooling modules
•
Temperature sensors (for the temperature of the backplane board
and controller board)
1.3.2 LED
Indicators
The following active components come with LEDs to indicate the status of
the individual component:
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