__________ might be required if you use Microsoft Cluster Service (MSCS) or if you run SAN snapshot or other layered applications in the virtual machine.

A.
RDM (Raw Device Mapping)

B.
VMFS2

C.
VMFS3

D.
Disk Sharing

Explanation:

RDM might be required if you use Microsoft Cluster Service (MSCS) or if you run SAN snapshot or other layered applications in the virtual machine. RDMs better enable systems to use the hardware features inherent to SAN arrays.