Cooling Fans - Dell PowerEdge R740xd Installation And Service Manual

Figure 28. Installing the cooling fan assembly
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 up to six standard or high performance hot swappable cooling fans.
For single processor systems without a mid drive tray, only four cooling fans are required. Fan bays 1 and 2 are covered by a fan blank.
CAUTION: Mixing of standard and high performance cooling fans is not supported.
NOTE: Each fan is listed in the systems management software, referenced by the respective fan number. If there is a problem
with a particular fan, you can easily identify and replace the proper fan by noting the fan numbers on the cooling fan assembly.
Table 38. Fan support matrix for R740xd
Front PSU type
Storage
8 x 3.5 inch Cable PSU or
Redundant
PSU
Redundant
PSU
78 Installing and removing system components
After working inside your system.
CPU count Fan1
1 Not required
2 Not required
Fan2 Fan3
Required Required
Required Required
Fan4 Fan5
Required Required
Required Required
Fan6
Not required
Required