单项选择题

A.Theywillbereplacingexistingserverswithnewerhardwareandthe2105subsystemwithanIBMSystemStorageDS8100.Thedatacentersare613kilometersapart.Thedatamigrationandproductioncutovermustbeaccomplishedwithminimaldisruption.Whichsolutionbestmeetstheserequirements?()
A.MetroMirror
B.HSM
C.SVC
D.GlobalCopy