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EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual
Configuration Client functionality are given in the RAIDWatch User’s
Manual.
• LEDs: Device-status-indicating LEDs are placed on all of the subsystems’
active components. These LEDs inform you of the integrity of a given
component or a given link. You should become familiar with the different
LEDs on the subsystem and be aware of their functions. (See Section 3.2)
• Audible Alarm: An audible alarm is present on the subsystem controller
board and will be triggered if any of a number of threatening events
occurred. These events usually jeopardize the functional and operational
integrity of the controller board and must be heeded at all times. Events
such as a breaching of the temperature threshold will trigger the alarm and
if an onsite subsystem manager is present, the manager should, using either
the LCD panel or the PC hyper-terminal, determine the cause of the alarm
and take the appropriate corrective measures. (See Section 3.3)
• Inter-Integrated Circuit (I
2
C): The I
2
C bus monitors the operational
integrity of the cooling modules, sensors for RAID controller
board/backplane temperature and voltage readings.
Subsystem monitoring is a necessary part of subsystem management. If failure
events or other disruptive events are detected and reported, the subsystem managers
must take the appropriate action to rectify the problem. Failure to act in a properly
specified manner to a system event (like overheating) can cause severe and
permanent damage to the subsystem.
3-2
Subsystem Monitoring Overview