Which feature meets these requirements?

A customer is running a mission-critical Oracle database on an IBM Storwize V7000 and is concerned about volume availability in the event of a RAID array failure. The customer requires that its RPO and RTO metrics be near zero.

Which feature meets these requirements?
A . Stretch Cluster
B . HyperSwap
C . Global Mirror with change volumes
D . Incremental FlashCopy

Answer: C

Explanation:

http://www-01.ibm.com/support/docview.wss?uid=tss1wp102560&aid=1