Supermicro 7043P-8R, User Manual

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6-4
S
UPER
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ERVER 7043P-8R Manual
6-3 System Fans
Three 12-cm chassis cooling fans located between the serverboard and
the drive bays provide cool air intake. (Devices other than hard drives may
not need a cooling fan for that bay.) These hot-plug fans should have their
power cables connected to the SCSI backplane in order to provide indica-
tion of drive failure. An additional heavy duty 12-cm exhaust fan at the rear
of the chassis pulls the cooling air through the system and expels the hot
air. Each of the three power supply modules also has a cooling fan.
Fan Failure
Under normal operation, all three chassis fans, the exhaust fan and the
power supply fans run continuously. If the power supply fan fails, the
power fail LED on the control panel will illuminate. The system can operate
with the reamining two power supply modules, but you should replace the
failed power supply as soon as possible. The three chassis cooling fans
(not the exhaust fan) are hot-swappable and can be replaced without pow-
ering down the system.
Replacing System Fans
1. Identifying the failed fan:
Inspect the back of the chassis to see if the 12-cm exhaust fan has
failed. You must power down the system to replace this fan. The 12-cm
exhaust fan is in a housing that can be removed from the chassis but it
is not hot-swappable - see Figure 6-3. To replace a failed chassis
cooling fan, first remove the top/left chassis cover by removing the two
screws from the back lip of the top/left cover. Then push in the release
tab on the cover and push it toward the rear of the chassis until it stops
(after moving about ½ inch). Lift the cover up and off the chassis and
see which fan has failed.
2. Removing a hot-plug fan housing:
Depress the locking tab on a chassis cooling fan and pull the unit straight
out by the handle. The fan wiring for these fans has been designed to
detach automatically.
3. Installing a new system fan:
Replace the failed fan with an identical one (available from Supermicro).
Install and reassemble it in the fan housing then plug the housing back
into its slot; it should *click* into place when fully inserted. Check that
the fan is working properly and replace the top/left side chassis panel.