Infortrend A12U/A08U-G2421 User Manual download pdf (Page 48)

EonStor A12U/A08U-G2421 Installation and Hardware Reference Manual

Figure 3-7: Cooling Fan Module LED

RED Status

OFF

The cooling fan module is operating normally.

The cooling fan module has failed and must be replaced.

Table 3-7: Cooling Fan Module LED Definitions

The subsystem has a novel approach to stabilizing the temperature within the

subsystem: When the sensors within the enclosure detect critical working conditions,

such as high ambient temperature or the failure of any cooling or PSU module, the

system will turn the cooling fans to high speed to extract more heat. Once the

ambient temperature cools down to normal or the faulty module has been replaced,

the cooling fans return to normal speed.

3.3 Audible Alarm

Different subsystem environmental and operational parameters (i.e., temperature,

etc.) have been assigned a range of values between which they can fluctuate. If either

the upper or lower thresholds are exceeded, an audible alarm will automatically be

triggered. The alarm will also be triggered when an active component of the

subsystem fails. If the subsystem manager is onsite and hears the alarm, the manager

will have to read the error message on the LCD screen or the PC terminal in order to

determine what has triggered the alarm. After determining what has occurred, the

subsystem manager must take appropriate actions to rectify the problem.

WARNING!

When an alarm is triggered, it is necessary for you to determine the problem. If the

audible alarm is ignored and the problem is not rectified, unexpected damages may

occur.

3-8

Audible Alarm

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Infortrend A12U/A08U-G2421 User Manual Page 48