If you receive this message, your hardware does not support IPMI or the corresponding add on hardware is not supported. For Dell servers this is in the DRAC component, for HP servers its in the ILO.
To check if IPMI is available on the ESX host, type the following command in the ESX Server console and press Enter:
1. dmidecode | grep IPMI
If this returns a value, IPMI is available for you hardware. If it does not return a value it is not available and contact your hardware vendor.
To avoid the message during bootup, the following command needs to be executed in the ESX Server console:
1. chkconfig --level 0123456 ipmi off