When Failure Occurs - NEC Express5800 Series Maintenance Manual

Chapter 1 Maintenance
8.5

When Failure Occurs

[?] Memory dump (debug information) cannot be collected when a failure occurs:

Do you press the DUMP switch correctly?
→ Hold down the DUMP switch for 4 to 8 seconds if you would like to collect memory dump by
pressing the switch. If you press DUMP switch shorter than 4 seconds or longer than 8 seconds,
you will not be able to collect memory dump.

Check if you are not using a physical processor of CPU #0 for the virtual machine.
→ 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.
* Setting procedure for "Scheduling Affinity"
Select the target virtual machine from vSphere Client and select "Edit" from CPUinformation on the
"Resource Allocation" page. On the displayed property screen, select "Advanced CPU" on the
"Resource" page to change "Scheduling Affinity".
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Express5800/R320c-E4, R320c-M4 Maintenance Guide (VMware)
8. Troubleshooting