Oracle X7-8, Service Manual

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Clear Hardware Fault Messages (Oracle ILOM)
Cooling Issue Description Action Prevention
External Ambient
Temperature Too
High
The server fans pull cool air into the
server from its external environment.
If the ambient temperature is too
high, the internal temperature of the
server and its components increases.
This can cause poor performance and
component failure.
Verify the ambient temperature
of the server space against the
environmental specifications for
the server. If the temperature is not
within the required operating range,
remedy the situation immediately.
Periodically verify the ambient
temperature of the server space to
ensure that it is within the required
range, especially if you made any
changes to the server space (for
example, added additional servers).
The temperature must be consistent
and stable.
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.
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.
Periodically inspect and clean the
server vents using an ESD certified
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.
Cooling Areas
Compromised
The air baffle, component filler
panels, and 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.
Inspect the server interior to ensure
that the air baffle is properly
installed. Ensure that all external-
facing slots (storage drive, PCIe) are
occupied with either a component or
a component filler panel. Ensure that
the server top cover is in place and
sits flat and snug on top of the server.
When servicing the server, ensure
that the air baffle is installed
correctly and that the server has no
unoccupied external-facing slots.
Never operate the server without the
top cover 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
Investigate the cause of the
overtemperature event, and
replace failed components
immediately . For hardware
troubleshooting information, see
“Troubleshooting Server Hardware
Faults” on page 48 .
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 .
56 Oracle Server X7-8 Service Manual • October 2017