G A L A X Y ® A U R O U R A C O N F I G U R A T I O N A N D S Y S T E M I N T E G R A T I O N G U I D E
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Section 4 Troubleshooting Guide
b) A single removable power supply system, with a fan at either end of the
power supply module, and a DC power distribution board that the power
supply module plugs into, with status monitoring. Dual power cord.
c) A dual-redundant power supply system, with a fan at either end of the each
power supply module, and a DC power distribution board that the power
supply module plugs into, with status monitoring. Dual power cord.
While these power system configurations may seem drastically different, there
are a large number of components in them which are common to all three. The
motherboard/array currently does not monitor the output of the power supply
status cable – it looks directly at voltages. Here are some components, along
with possible problems/fixes:
Power cord:
The majority of power problems that people have are from things
which are outside of the system. On any power system, if there’s no power
going in, it will simply not turn on. If the cable itself is damaged, it also may not
turn on. If the power source is not providing power (i.e. the wall outlet), it will
not turn on, and finally, if either plug on the power cable is damaged, it may
not turn on. One other thing worth mentioning along these lines is electrical
sparks coming out of the power connection on the power supply when it is
connected – this is typically due to a worn-out power cord or damaged
receptacle on the power supply. If sparks or smoke comes out of the power
supply itself, it could be a problem with the power supply – unplug it
immediately in either case. On a dual-power supply system, if one power
supply isn’t getting power for whatever reason, it will not register to the array
as a power supply failure, as the power supply actually is working, but is not
getting power. Of course, if neither power supply is getting power, the problem
is more likely outside of the array.
4.4
Using GUI for FAN problems
The fan(s) in the power supply (or power supply modules) are temperature-
controlled. The fans will operate at approximately 50% of their speed when the
temperature is low, and at full speed if the temperature becomes too great.
Several things can happen with the fans: If the bearings break down inside,
they will stop spinning. If the blades break, they will stop spinning. If the fan
motor breaks down, they will stop spinning, and if they get fouled with enough
debris, they will stop spinning. If a fan starts making an unusual noise, it is a
typcal symptom of one of these problems. If this is the case, you do not want
to ignore it. If the fan fails, a power supply failure itself, may be imminent. It
can be somewhat challenging to hear the power supply fans over the noise of
the main system fans – when you first plug in the power supplies with the
system off, you should be able to hear the power supply fans at low-speed. In
