A company has five heterogeneous storage arrays that are all connected to a common SAN
environment.
They want to offer storage to their end users, masking the identity of the target storage so the
users cannot tell which storage system they are using.
Which virtualization technique would work in this environment?

A.
Distributed virtualization

B.
Block-level storage virtualization

C.
Hadoop HDFS

D.
File-level storage virtualization