If fan modules continually cycle between normal speed and full
speed, disconnect all power from the BladeCenter S chassis,
wait a few minutes, and reconnect the power modules.
Problem
When you remove a device such as the media
tray or a power module from the
BladeCenter S chassis,
the fan modules will run at full speed. When you replace the device, the fan
modules will return to normal speed.
After replacing a device, the fan
modules continually cycle between normal speed and full speed for an extended
period of time.
Investigation
Perform these steps to resolve the
problem:
- Disconnect power from all power modules in the BladeCenter S chassis.
Important: Before disconnecting power, make sure that
you shut down each blade server. See the documentation that comes with your
blade server for information about shutting down the operating system on the
blade server.
- Wait approximately three to five minutes, and connect power to all power
modules.
- If the problem persists, call IBM support.