Have you ever wondered how to dump ESXi Diagnostic Core Dump on a VSAN 6.5 Node?? Yes it's a reality now..

EXTENDING AN ESXI DIAGNOSTIC CORE DUMP PARTITION ON A VSAN 6.5 NODE

http://cormachogan.com/2017/01/04/extending-esxi-diagnostic-core-dump-partition-vsan-6-5-node/

Extending an ESXi diagnostic coredump partition on a vSAN 6.5 node (2147881)

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2147881

Upgrade ESXi 6.0 to 6.5 via VMware Update Manager

https://www.linkedin.com/pulse/upgrade-esxi-60-65-via-vmware-update-manager-victor-wu