Oracle X7-8 Service Manual page 54

Clear Hardware Fault Messages (Oracle ILOM)
Cooling Issue Description
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.
Cooling Areas The component filler panels, and
Compromised server top cover maintain and direct
the flow of cool air through the
server. These server components
must be in place for the server
to function as a sealed system. If
these components are not installed
correctly, the airflow inside the
server can become chaotic and non-
directional, which can cause server
components to overheat and fail.
Hardware Components, such as power supplies
Component and fan modules, are an integral
Failure 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 can
maintain both the power and the
cooling subsystems.
54 Oracle Server X7-8 Service Manual • April 2018
Action
or debris. Additionally, inspect
the server interior for improperly
installed components or cables that
can block the flow of air through the
server.
Inspect the server interior to ensure
that the components are properly
installed. Ensure that all external-
facing slots (storage drive, PCIe) are
occupied with either a component or
a component filler panel.
Investigate the cause of the
over-temperature event, and
replace failed components
immediately. For hardware
troubleshooting information, see
"Troubleshooting Server Hardware
Faults" on page 46.
Prevention
vacuum cleaner. Ensure that all
components, such as cards, cables,
fans, air baffles and dividers are
properly installed. Never operate the
server without the top cover installed.
When servicing the server, ensure
that the components are installed
correctly and that the server has no
unoccupied external-facing slots.
Component redundancy is provided
to allow for component failure
in critical subsystems, such as
the cooling subsystem. However,
once a component in a redundant
system fails, the redundancy no
longer exists, and the risk for server
shutdown and component failures
increases. Therefore, it is important
to maintain redundant systems
and replace failed components
immediately.