Acustomerneedsaremotedatacopy datamigration andoff-sitebackupsolution.Thesolutioncannotimp

Acustomerneedsaremotedatacopy，datamigration，andoff-sitebackupsolution.Thesolutioncannotimpactapplicationperformance.Thesitesareovercontinentaldistances.WhichcharacteristicofDS8700GlobalMirrormakesitagoodfitforthiscustomer（）

A.itprovidessynchronousmirroringonbothsides

B.itcanbeimplementedwithoutFlashCopyvolumesatthetargetsite

C.withGlobalMirror，theMetroMirrorfunctionscanbeusedovercontinentaldistances

D.ithasalmostnoimpactonapplicationperformancebecauseofitsextremelyshortandadjustablecoordinationtime