Collection Of The Memory Dump; Preparing For Memory Dump; Saving Dump Files - NEC Express5800 320Fd-MR User Manual

7-18 Troubleshooting

Collection of the Memory Dump

If a failure occurs, the memory data should be dumped to acquire the required information.
IMPORTANT:

Collect memory dump through consultation with a maintenance service engineer of your
maintenance service company. Collecting memory dump while the system is running
successfully can result in a problem in system operation.

You may see a message telling you the virtual memory is not sufficient in a reboot
following a failure. Continue to start up the system. If you perform reset and attempt to
restart again, dumping data may fail.

Press the DUMP switch for four to eight second on the primary CPU/IO module, with
POWER LED blinking,.

Preparing for Memory Dump

Memory dumping with the DUMP switch may disable the server to restart. In such a case, it is
required to shut down the server forcibly.

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
/ver/crash/. (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