Air Flow Support; Power Supply Zone; Full Height Riser Zone; Table 18 Redundant Fan Header Assignment - Intel SR1500 - AXXMINIDIMM DDR-2 RAID Controller Cache Memory Manual

Intel® Server System SR2500AL
The system fan module has been designed for ease of use and has support for several
management features that can be utilized by the server board management system.
•
The fan module houses two different fan sizes. System fans 1, 2, 3 and 4 use an 80mm
fan, while system fans 5 and 6 use a 60mm fan.
•
Each fan is designed for tool-less insertion to or removal from the fan module and can
be hot-swapped in the event of failure.
•
Each fan within the module is equipped with a failure LED. In the event of a fan failure,
the failure LED on the failing fan can be illuminated by server management.
•
Each fan within the module is capable of supporting multiple speeds. If the internal
ambient temperature of the system exceeds the value programmed into the thermal
sensor data record (SDR), the BMC firmware will increase the speed for all the fans
within fan module.
•
Each fan connector within the module supplies a tachometer signal that allows the BMC
to monitor the status of each fan. If one of the fans should fail, the remaining fans will
increase their rotation and attempt to maintain the thermal requirements of the system.
3.3

Air Flow Support

To control airflow within the system, the chassis uses an air baffle and a CPU air duct to isolate
and direct airflow to three critical zones: the power supply zone, the full height PCI riser zone,
and the CPU/memory/low profile PCI riser zone.
3.3.1

Power Supply Zone

An air baffle is used to isolate the air flow of the main system board zones from the zone directly
behind the power supply. As the power supply fans pull pre-heated air through the power
supply from inside the chassis, the zone behind it must remain as cool as possible by drawing
air from the leftmost drive bays only.
3.3.2

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 system fan 3 of
the fan module in a non-redundant fan configuration. In a redundant fan configuration, the air
flow for this zone is provided by system fans 5 and 6. Air is drawn from the drive bay area
through the fan and pushed out of the system through ventilation holes the back side of the
chassis.
Revision – 1.6

Table 18 Redundant Fan Header Assignment

Fan ID
Fan #1 - CPU1 Cooling
Fan #2 - CPU1 Cooling
Fan #3 - CPU2 Cooling
Fan #4 - CPU2 Cooling
Fan #5 - PCI Cooling
Fan #6 - PCI Cooling
Intel order number D31980-009
Mid-plane Fan Header Name
FAN_1
FAN_2
FAN_3
FAN_4
FAN_5
FAN_6
2BCooling Sub-System
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