Dell
PowerEdge M1000e Technical Guide 31
of the fan as compared to the electrical power required to run the fan. The M1000e fan operates at
extreme efficiencies which correlates directly into savings in the customer’s required power‐to‐cool.
The high‐efficiency design philosophy also extends into the layout of the subsystems within the
M1000e. The Server Modules, I/O Modules, and Power Supplies are incorporated into the system with
independent airflow paths. This isolates these components from pre‐heated air, reducing the
required airflow consumptions of each module.
Figure 25. Server Cooling Air Profile
The Server Modules are cooled with traditional front‐to‐back cooling. As shown in the figure, the
front of the system is dominated by inlet area for the individual server modules. The air passes
through the server modules, through venting holes in the midplane, and is then drawn into the fans
which exhaust the air from the chassis. There are plenums both upstream of the midplane, between
the midplane and the blades, and downstream of the midplane, between the midplane and the fans,
to more evenly distribute the cooling potential from the three columns of fans across the server
modules.
Figure 26. I/O Module Inlet and IOM Locations
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