A.VMW_PSP_MRU is default for a majority of active-active and active-passive arrays.
B.VMW_PSP_MRU will remain on the selected path even if the state were to change.
C.VMW_PSP_MRU is recommended for Virtual SAN.
D.VMW_PSP_MRU will have no preferred path setting for the Plug-In.
The host selects the path that it used most recently. When the path becomes unavailable, the host
selects an alternative path. The host does not revert back to the original path when that path
becomes available again. There is no preferredpath setting with the MRU policy. MRU is the
default policy for active-passive storage devices.