Datasheet

Cooling Subsystem Intel® Server System SR1550AL
Revision – 1.3
Intel order number D31982-006
22
Table 18. Fan Header Assignment
Fan ID Mid-plane Fan Header Name
Fan #1 - CPU1/System
memory Cooling
FAN_1
Fan #2 - CPU1/System
memory Cooling
FAN_2
Fan #3 - CPU2/Low Profile
Risrs/MCH Cooling
FAN_3
Fan #4 - CPU2/Low Profile
Risrs/MCH Cooling
FAN_4
Fan #5 - Full Hieght Riser
Zone Cooling
FAN_5
.
3.2 Air Flow Support
To control airflow within the system, a power supply air duct and CPU air duct are used to
isolate and direct airflow to three critical areas or zones: the power supply zone, the full height
PCI zone, and the CPU/memory/low profile PCI zone.
3.2.1 Power Supply Zone
A molded plastic air duct / baffle is used to isolate the air flow of the main system board zones
from the zone directly in front of the power supply modules. The power supply fans pull pre-
heated air from the leftmost drive bays across the Power Distribution Board to cool its voltage
regulators.
Figure 18. Power Supply Air Duct
3.2.2 Full Height Riser Zone
The full height riser zone is the area between the power supply assembly and the full height
riser card of the riser assembly. The air flow through this area is generated by FAN #5 of the
fan module. Air is drawn from the drive bay area through the fan and pushed out of the system
through ventilation holes at back of the chassis.