esx.problem.coredump.unconfigured
Summary
No vmkcore disk partition is available and no network coredump server has been configured. Host core dumps cannot be saved.
Causes
A diagnostic partition or a network core dump server is not configured for this host.
Resolutions
Configure network core dump server or a diagnostic partition for the host.
External
Refer to the VMware Online Documentation for more information on vCenter event messages and possible solutions.