Which aspect of virtualization within the Storwize family should be emphasized by the pre-sales storage person to enable this disaster recovery plan?

A customer has two data centers located 15 kilometers apart. One site is for production and the other is a DR hot site. In an effort to maximize the life span of the storage subsystems, equipment retired at the production site is put into service at the hot site. This has led to a heterogeneous storage environment across both locations and complexity in keeping the data synchronized and uncorrupted.

Which aspect of virtualization within the Storwize family should be emphasized by the pre-sales storage person to enable this disaster recovery plan?
A . A single set of advanced copy services
B . Consolidation to a single pool of storage
C . Ease transition to an on-demand IT infrastructure
D . Significantly reduced planned and unplanned downtime

Answer: A