A customer has two IBM Storwize V7000 I/O groups. As part of its business continuity plan, one unit is located within its primary site and the other at a disaster recovery site. The customer synchronously replicates between each IBM Storwize V7000.
What should the customer configure to provide fast non-disruptive failover in case of an outage?

A. Transparent Cloud Tiering
B. Stretched cluster

C. HyperSwap

D. Global Mirror

Reference: https://en.wikipedia.org/wiki/IBM_SAN_Volume_Controller