Cooling Fans - Dell EMC PowerEdge T640 Installation And Service Manual

Figure 39. Installing the air shroud
Next step
Follow the procedure listed in

Cooling fans

The cooling fans are integrated into the system to dissipate the heat generated by the functioning of the system. These fans provide
cooling for the processors, expansion cards, and memory modules.
Your system supports a total of eight fans, including six hot-swappable fans and two external fans. Two hot-swappable fans are mounted in
rear side of the air shroud. The other four hot-swappable fans are mounted in the fan assembly that is located in the chassis between the
hard drive bay and the processors. The two external fans are mounted on the outside of the chassis for GPU configurations. There are two
additional fans integrated in the power supplies to cool the power supplies and provide additional cooling for the whole system.
Table 32. Fan support matrix for T640
Front PSU type
Storage
8 x 3.5 inch Cable PSU or
Redundant
PSU
Redundant
PSU
12 x 3.5 inch Redundant
PSU only
NOTE: The high performance fans are required for 12 x 3.5 inch drive + 2 x 3.5 inch rear drive system. For more information, see
the Thermal restriction matrix topic in the Technical specifications section.
94 Installing and removing system components
After working inside your system.
CPU count Fan1
1 Not required
2 Not required
1 Required
2 Required
Fan2 Fan3
Required Required
Required Required
Required Required
Required Required
Fan4 Fan5
Required Required
Required Required
Required Required
Required Required
Fan6
Not required
Required
Not required
Required