NEC Express 5800 User Manual page 413

(7) Clicking "Cancel" enables to move to the initial screen of Core Status.
IMPORTANT:
 In the event of failure of the core
Immediately after the failure, the failure core is displayed as
Valid(Disable).
Then after the next power on, the Valid(Enable) setting of
failure core will move to alternate core. And The status about
the failure core will not be displayed.
Alternative core will be core of the Valid(Disable) or Invalid
setting in the same processor. Alternative core is selected in
the order of lowest to highest number.
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