Troubleshoot Hardware Faults
Airflow Blockage
The server cooling system uses fans to pull cool air in from the server front intake vents and
exhaust warm air out the server back panel vents. If the front or back vents are blocked, the
airflow through the server is disrupted and the cooling system fails to function properly causing
the server internal temperature to rise.
Action
: Inspect the server front and back panel vents for blockage from dust or debris.
Additionally, inspect the server interior for improperly installed components or cables that can
block the flow of air through the server.
Prevention
: Periodically inspect and clean the server vents using a vacuum cleaner. Ensure that
all components, such as cards, cables, fans, air baffles and dividers are properly installed.
Hardware Component Failure
Components, such as power supplies and fan modules, are an integral part of the server cooling
system. When one of these components fails, the server internal temperature can rise. This rise
in temperature can cause other components to enter into an over-temperature state. Additionally,
some components, such as processors, might overheat when they are failing, which can also
generate an over-temperature event.
To reduce the risk related to component failure, power supplies and fan modules are installed
in pairs to provide redundancy. Redundancy ensures that if one component in the pair fails,
the other functioning component can continue to maintain the subsystem. For example, power
supplies serve a dual function; they provide both power and airflow. If one power supply
fails, the other functioning power supply is able to maintain both the power and the cooling
subsystems.
Action
: Investigate the cause of the over-temperature event, and replace failed components
immediately
. For hardware troubleshooting information, see
“Troubleshooting Server Hardware
Prevention
: Maintain redundant systems and replace failed components
immediately
.
Troubleshooting Power Issues
If your server does not power on, the cause of the problem might be:
■
“AC Power Connection” on page 70
■
“Power Supplies (PSUs)” on page 70
Troubleshooting and Diagnostics
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Summary of Contents for SUN X4-8
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Page 247: ...BIOS Setup Utility Screens Memory Configuration BIOS Setup Utility 247 ...
Page 249: ...BIOS Setup Utility Screens Advanced Serial Port Console Redirection BIOS Setup Utility 249 ...
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Page 255: ...BIOS Setup Utility Screens Advanced Network Stack BIOS Setup Utility 255 ...
Page 257: ...BIOS Setup Utility Screens Advanced BMC Network Configuration BIOS Setup Utility 257 ...
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