Memory Problems; Network Connection Problems; Option Problems - IBM eServer BladeCenter JS20 Installation And User Manual

Memory problems

Memory symptom
The amount of system
memory displayed is less
than the amount of physical
memory installed.

Network connection problems

Network connection
symptom
One or more blade servers
are unable to communicate
with the network.

Option problems

Option symptom
An IBM option that was just
installed does not work.
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BladeCenter JS20 Type 8842: Installation and User's Guide
Suggested action
Make sure that:
v The memory modules are seated correctly.
v You have installed the correct type of memory.
v All banks of memory on the DIMMs are enabled. The server might have
automatically disabled a DIMM bank when it detected a problem, or a DIMM bank
might have been manually disabled.
v The DIMMs are not defective. If a DIMM is defective, replace it; then, restart the
server.
v The blade-server firmware code automatically updated the memory configuration, if
you changed the memory.
If the problem remains, call for service.
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. See the IBM
Eserver BladeCenter Type 8677 Hardware Maintenance Manual and
Troubleshooting Guide on the IBM BladeCenter Documentation CD for details.
v The settings in the switch module are correct for the blade server (settings in the
switch module are blade server specific).
If you installed an optional I/O adapter, make sure that:
v The option is designed for the blade server. See the "Server Support" flowchart on
the cover for information about obtaining ServerProven
from the World Wide Web.
v You followed the installation instructions that came with the option.
v You have not loosened any other installed options or cables.
v The new configuration information was saved in the blade-server firmware code.
Whenever memory or an option is changed, the new configuration information is
automatically saved in the blade-server firmware code.
If the problem remains, call for service.
Suggested action
Make sure that:
v The option is designed for the blade server. See the "Server Support" flowchart on
the cover for information about obtaining ServerProven compatibility information
from the World Wide Web.
v You followed the installation instructions that came with the option.
v You have not loosened any other installed options or cables.
If the problem remains, call for service.
™
compatibility information