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單項選擇題

A customer needs to achieve a very aggressive RTO of 30 minutes or less. A critical requirement is a continuous availability and disaster recovery solution for the mainframe environment.
What IBM solution should be recommended to this customer?()

A. Metro Mirror
B. Metro/Global Mirror
C. Geographically Dispersed Open Servers (GDOS)
D. Geographically Dispersed ParallelSysplex (GDPS)

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