Collecting The Memory Dump - NEC N8800-149F User Manual

7-20 Troubleshooting

COLLECTIng THE MEMORY DUMP

If a failure occurs, the memory data should be dumped to acquire the required information.
IMPORTANT:
Consult with your sales agent before dumping the memory. Executing memory dumping
while the server is in the normal operation may affect the system operation.
Restarting the system due to an error may display a message indicating insufficient virtual
memory. Ignore this message and proceed. Restarting the system again may result in
dumping improper data.
Press the DUMP switch on the primary CPU/IO module, whose POWER LED has been
blinking, for three to eight seconds. Use something sharp, such as curved clips to press the
DUMP switch on CPU/IO module 1.
If a physical processor of CPU #0 is allowed to be used for the virtual machine, memory
dump may not be collected even when pressing the DUMP switch. To operate the machine
assuming to collect memory dump, set the value other than "0" for the property of
"Scheduling Affinity" of the virtual machine.
Preparing to collect Memory Dump
Memory dumping with the DUMP switch may disable the server to restart. In such a case, it is
required to force the server to shut down.
Saving Dump Files
Press the DUMP (NMI) switch on the primary CPU/IO module to save the dump file when an error
occurs. Insert something sharp-pointed like a pen into the switch hole to press the DUMP switch.
Pressing the DUMP switch saves the dump file in the specified directory. (Memory dumping may
not be available when the CPU stalls.)
IMPORTANT:
Do not use a toothpick or plastic stick that is easy to break.
DUMP (NMI) switch