Oracle X7-8 Service Manual page 85

All DPCCs are installed regardless of whether they contain a card or not.
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Both fan frames are populated with fan modules.
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Each fan frame and fan module is populated.
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All CMOD processors have a heatsink.
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Each SMOD bay has an SMOD.
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Cooling Zones
The server has five front-to -back cooling zones. The cooling zones are numbered from left to
right (from the front of the server) as zone 0 to zone 4.
The airflow cooling in zone 0 is concentrated through the power supplies (PSs) and is
provided by the internal PS fan modules. In a 4-socket configuration, zones 1 and 2 operate
independently from zones 3 and 4.
The fan modules (FM0- FM7) provide the airflow for cooling zones 1-4. Each zone has a pair
of dedicated FMs:
Zone 1 airflow cooling is concentrated on the CPU modules (CMODs) CMOD0 and
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CMOD1 and is provided by FM0 and FM1.
Zone 2 airflow cooling is concentrated on CMOD2 and CMOD3 and is provided by FM2
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and FM3.
Zone 3 airflow cooling is concentrated on CMOD4 and CMOD5 and is provided by FM4
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and FM5.
Zone 4 airflow is concentrated on CMOD6 and CMOD7 and is provided by FM6 and FM7.
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In a four-CMOD server configuration, the fan modules for cooling zones 3 and 4 are
Note -
not powered. However, to maintain the integrity of the cooling subsystem, FMs 4-7 must be
installed in the server.
Troubleshooting Server Subsystems
Troubleshooting and Diagnostics 85