A.VMware DPM does not place hosts in standby mode if doing so would violate failover
B.DRS does not evacuate virtual machines from a host for the purpose of placing it in maintenance
or standby modes if placing the host in this state would violate failover requirements.
C.DRS will evacuate virtual machines from hosts and places hosts in maintenance or standby
modes regardless of the impact this might have on failover requirements.
D.VMware DPM will place hosts in standby mode even if doing so violates failover requirements.