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Power problems
Power symptom
The blade server does not
turn on.
Power throttling
Be aware that the BladeCenter unit automatically reduces the BladeCenter QS22
processor speed if certain conditions are met. One such condition is temperature
thresholds being exceeded, for example, when the blade server is running in
acoustic mode. This throttling occurs independent of your power configuration. Full
processor speed is restored automatically when the conditions that have caused the
throttling have been resolved.
Network connection problems
Network connection
symptom
One or more blade servers
are unable to communicate
with the network.
64
BladeCenter QS22 Type 0793: Installation and User's Guide
Suggested action
1. Make sure that:
a. The power-on LED on the front of the BladeCenter unit is lit.
b. The LEDs on all the BladeCenter power modules are lit.
c. The power-on LED on the blade-server control panel is flashing slowly.
v The power-on LED only flashes rapidly while it is communicating with the
management module. If the power-on LED is flashing rapidly and continues
to do so for an unduly long time, the blade server is not communicating
with the management module. Power off, reseat the blade server and
reboot.
v If the power LED is off, either the blade bay is not receiving power, the
blade server is defective, the Advanced Management Module firmware is an
earlier version and does not support this function, or the LED information
panel is loose or defective.
d. Local power control for the blade server is enabled. Check using the
Advanced Management Module Web interface. The blade server might have
been instructed through the Advanced Management Module to turn on.
2. If you have just installed a new option in the blade server, remove it, and restart
the blade server. If the blade server now powers on, troubleshoot the option. See
the documentation that comes with the option for further information.
3. Try another blade server in the blade bay. If it works, you may need to have a
trained service technician replace the system blade assembly.
Suggested action
Make sure that:
v The switch modules for the network interface being used are installed in the
correct BladeCenter bays and are configured and operating correctly.
v The settings in the switch module are correct for the blade server (settings in the
switch module are blade server specific).
For additional information, see:
v Chapter 5, "Configuring the blade server," on page 39
v The Problem Determination and Service Guide for your BladeCenter unit
v Other product-specific documentation that comes with the switch module
Note: For the latest editions of the IBM BladeCenter documentation, go to
http://www.ibm.com/support/us/en/.
If the problem remains, see QS22 Problem Determination and Service Guide.
If all the blades cannot communicate with the network, check the network itself for
problems.
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