I got this question: Does VMware ESXi have the capability to effectively use OS Control mode? Which option is recommended for VMware ESXi 4 and 5?
Answer: See page 5 of the below document. The recommendation is OS Control if DRS is in use.
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01732803/c01732803.pdf