Blade 13 throttled


The specified blade server has throttled; it is achieving lower power consumption by temporarily reducing the CPU throughput. This might be because the chassis has been set to acoustic mode (set from the Power Management page of the advanced management module Web interface), there is a problem with a power module, or the power module has been removed from the chassis.



Alert Category

Blades (Warning) - mmTrapBladeN

Log Source


Automatically notify service




Alarm Panel LED (BC T and BC HT)


User response

Perform these steps:
  1. Check the event log for other events related to the power module and resolve those messages.
  2. If acoustic mode is set for the chassis:
    1. Check the room ambient temperature to ensure that it is within the operating specifications for the chassis.
    2. Make sure that all fan/blower modules are running. Replace fan modules if necessary.
    3. Make sure that a device or filler is installed in each bay in the front and rear of the chassis, and make sure that there is nothing covering the bays. Any missing components can cause a major reduction in airflow for the blade server.
    4. Make sure that there is nothing covering the media tray (that will disrupt the airflow to the ambient temperature sensor).
    5. Update the firmware for the advanced management module. You can find firmware on the IBM BladeCenter software and device drivers Web page.
    6. Update the firmware for the blade server.
    7. For all blade servers other than the JSxx blade servers, make sure the heat sink and CPU are secured on the system board.
      Note: Be careful when handling the heat sink and CPU, they may be extremely hot.
  3. Verify that all power modules are functional (the DC LEDs are lit).
  4. Reseat the blade server.
  5. Check the IBM Support Web page for any service bulletins that might be related to this problem.