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:
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Zone 1 airflow cooling is concentrated on the CPU modules (CMODs) CMOD0 and CMOD1 and is provided by FM0 and FM1.
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Zone 2 airflow cooling is concentrated on CMOD2 and CMOD3 and is provided by FM2 and FM3.
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Zone 3 airflow cooling is concentrated on CMOD4 and CMOD5 and is provided by FM4 and FM5.
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Zone 4 airflow is concentrated on CMOD6 and CMOD7 and is provided by FM6 and FM7.
Note:
In a four-CMOD server configuration, the fan modules for cooling zones 3 and 4 are not powered. However, to maintain the integrity of the cooling subsystem, FMs 4-7 must be installed in the server.
| Call Out | Description | Cooling provided by: |
|---|---|---|
|
0 |
Zone 0: Power supplies |
Four power supply fans |
|
1 |
Zone 1: CMOD0 and CMOD1 |
FM0 and FM1 |
|
2 |
Zone 2: CMOD2 and CMOD3 |
FM2 and FM3 |
|
3 |
Zone 3: CMOD4 and CMOD5 |
FM4 and FM5 |
|
4 |
Zone 4: CMOD6 and CMOD7 |
FM6 and FM7 |