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Galaxy GHDX2-2430S/R-24F4D Installation and Hardware Reference Manual
System Monitoring
3-2
Audible alarm: The audible alarm on the subsystem controller board will be
triggered if any of a number of threatening events occurs. These events usually
jeopardize the functional and operational integrity of the controller board and must
be heeded at all times. Events such as a breach of the temperature threshold will
trigger the alarm and if an onsite subsystem manager is present, the manager should
use either the LCD keypad panel or a PC running terminal software to determine the
cause of the alarm and take appropriate corrective measures.
I
2
C: An I
2
Cbus connects sensors and presence detection circuitries within the
subsystem (present/not present, ready/failed, etc.).
Subsystem monitoring is a necessary part of subsystem management. When system fault
events or other disruptive events are detected and reported, the subsystem manager must
take appropriate actions to rectify the problem. Failure to act in a properly specified
manner to a system event (such as overheating) can cause severe and permanent damage.
3.2. Status-indicating LEDs
3.2.1 Controller Module LEDs
The controller module faceplate is shown in Figure 3-1 below. The LEDs are numbered
from 1 to 6 and their definitions are shown in Table 3-1 below.
Figure 3-1: Galaxy HDX2 Controller Faceplate
LED Name Color Status
1
Ctrl
Status
Green/
Amber
GREEN indicates that the controller is active and
operating normally.
AMBER indicates the controller is being initialized
or has failed. The controller is not ready.
2 C_Dirty
Amber
ON indicates that data is currently cached in
memory or is supported by the BBU during a power
loss.
3 Temp.
Amber
ON indicates that one of the preset temperature