You are designing storage for a new Hadoop cluster. Which of the following statements is TRUE regarding the
usage of SAN or NAS?

A.
SAN or NAS should not be used to set up HDFS

B.
SAN or NAS must be used, if available, to provide backup capabilities

C.
SAN or NAS can be used to support retention policies

D.
SAN or NAS cannot be used if your Hadoop cluster spans 2 sites

Explanation:
http:// www-01.ibm.com/software/data/infosphere/hadoop/hdfs/