What are two methods of maximizing VMFS performance for virtual machines across all the hosts
in a cluster? (Choose two.)

A.
Use disk shares to prioritize virtual machine disk I/O

B.
Enable Storage I/O control

C.
Enable Storage DRS with I/O load balancing

D.
Enable Host Cache using local SSD drives

Explanation:

To maximize VMFS performance of virtual machines, you can enable Storage I/O control and
storage DRS with I/O load balancing.
http://www.vmware.com/files/pdf/techpaper/VMW-vSphere41-SIOC.pdf