Which additional IBM software enables non-disruptive failover in the event of a storage hardware failure?

An IBM mainframe client has IBM DS8886 CKD storage installed, The customer has decided to add another new IBM DS8886 and use IBM Metro Mirror to provide a synchronous redundant copy of the data.

Which additional IBM software enables non-disruptive failover in the event of a storage hardware failure?
A . IBM Global Mirror
B . IBM HyperSwap
C . IBM High Performance FICON
D . IBM Remote Pair FlashCopy

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Answer: B