单项选择题

A.Global Mirror for zSeriesB.Metro MirrorC.Global CopyD……

A System z customer is planning to deploy the IBM System Storage DS6800 in each of threesmall data centers located around a large city. A backup data center with an IBM System StorageDS8100 will serve as the disaster recovery facility. Which advanced function can the customerimplement to meet disaster recovery requirements?（）

A.Global Mirror for zSeries
B.Metro Mirror
C.Global Copy
D.Metro/Global Mirror

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