单项选择题
A.Operating environment
B.Parallel access volumes
C.Point-in-time copy
D.Count Key Data
单项选择题 Amainframecustomerwitha2105-800storagesubsystemwillbemigratingtoanewdatacenter.Theywillbereplacingexistingserverswithnewerhardwareandthe2105subsystemwithanIBMSystemStorageDS8100.Thedatacentersare613kilometersapart.Thedatamigrationandproductioncutovermustbeaccomplishedwithminimaldisruption.Whichsolutionbestmeetstheserequirements?（）
单项选择题 AbankhasrequestedproposalsforastoragesolutiontoupgradetheirdisasterrecoveryprocessesfortheirSystemz,UNIX,andMicrosoftWindowsenvironment.Thesolutionmustsimulateamulti-siteenvironmentandprovidethecustomertheabilitytoexploreMetroMirror,GlobalMirror,GlobalMirrorforz/OS,andFlashCopy.Floorspaceislimited.Whichsolutionbestmeetsthespecifiedrequirements?（）
单项选择题 ASystemzcustomerisplanningtodeploytheIBMSystemStorageDS6800ineachofthreesmalldatacenterslocatedaroundalargecity.AbackupdatacenterwithanIBMSystemStorageDS8100willserveasthedisasterrecoveryfacility.Whichadvancedfunctioncanthecustomerimplementtomeetdisasterrecoveryrequirements?（）