Understanding Server Cooling Zones
These topics describe how components are cooled in the server rack.
Note - For information about the number of power supplies that must remain in a system for proper cooling, see Servicing Power Supplies.
Related Information
CMIOU Chassis Cooling Zones
The CMIOU chassis has two cooling zones. In one cooling zone, eight fan modules push air through the CMIOUs from the front of the server and exhaust it at the rear of the server. In the other cooling zone, six fan modules push air through the power supplies and exhaust it through the chimney to the SPs and directly out the rear of the chassis.
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Related Information
Switch Chassis Cooling Zones
The switch chassis has seven cooling zones. Six of the cooling zones contain a horizontal row of six fan modules each. Each of these zones pushes air through a single switch unit from the front of the server and exhausts it at the rear of the server. In the other cooling zone, four fan modules push air through the power supplies and exhaust it through the chimney to the SPs and directly out the rear of the chassis.
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