Your network contains two servers named Server1 and Server2 that run Windows Server 2012.
Server1 and Server2 are connected to a Fibre Channel Storage Area Network (SAN).
Server1 and Server2 are members of a failover cluster named Cluster1.

You plan to host the clustered File Server role on the nodes in Cluster1.
Cluster1 will store application databases in shared folders.
You need to implement a storage solution for Cluster1.
The solution must minimize the amount of time the shared folders are unavailable during a failover.
What should you implement? More than one answer choice may achieve the goal. Select the BEST answer.

A.
An iSCSI Target Server cluster role in Cluster1

B.
The Multi Path I/O (MPIO) feature on Server1 and Server2

C.
A Virtual Fibre Channel SAN on Server1 and Server2

D.
A Cluster Shared Volume (CSV) in Cluster1

Explanation:
This allows a PHYSICAL cluster to connect to a SAN or Fibre-Channel SAN and use the SAN to host shared storage for the cluster. This will minimize downtime
during failover because both Server 1 and Server 2 will have red-and-write access to the SAN simultaneously. Both nodes can failover quickly because they do not
need to dismount or remount their VHDs as they share the same storage.
Not C – Virtual Fibre Channel SAN doesn’t even apply here as our nodes are physical servers.
Not A – iSCSI Target Server Role will only allow clients or other servers to access the SAN through Servers 1 and 2.
Not B – Not Applicable Here.

http://technet.microsoft.com/en-us/library/jj612868.aspx