A database administrator has requested a disk for a virtual machine that will run an I/O intensive
database application on an ESXi 5.x host. Which two disk types will best fit the needs of the
application? (Choose two.)

A.
Raw Device Mapped Disk

B.
Thin Provisioned Disk

C.
Thick Provision Lazy Zeroed Disk

D.
Thick Provision Eager Zeroed Disk

Explanation:
http://www.vmware.com/pdf/Perf_Best_Practices_vSphere5.0.pdfpage 31, clearly
states that best performance is achieved using eager zeroed provisioned disks, even when VAAI
is available