Your network contains a main data center and a disaster recovery data center. Each data center
contains a Storage Area Network (SAN). The main data center contains a two-node failover cluster
named Cluster1 that hosts a Microsoft SQL Server 2012 database named DB1.
The database files in DB1 are stored on the SAN in the main office. The disaster recovery data center
contains a server that runs SQL Server 2012.
You need to recommend a disaster recovery solution for the SQL Server database. The solution must
ensure that the database remains available if the main data center fails.
What should you recommend? More than one answer choice may achieve the goal. Select the BEST
answer.

A.
Deploy Distributed File System (DFS) Replication.

B.
Extend the failover cluster to the disaster recovery data center.

C.
Implement a Cluster Shared Volume (CSV) and move the database files to the CSV.

D.
Implement SQL Server database replication between the two data centers.

Explanation:

http://technet.microsoft.com/en-us/library/ms151198.aspx