ASystemzcustomerisplanningtodeploytheIBMSystemStorageDS6800ineachofthreesmalldatacenterslocatedaroundalargecity.AbackupdatacenterwithanIBMSystemStorageDS8100willserveasthedisasterrecoveryfacility.Whichadvancedfunctioncanthecustomerimplementtomeetdisasterrecoveryrequirements?（）
A.GlobalMirrorforzSeries
B.MetroMirror
C.GlobalCopy
D.Metro\/GlobalMirror
参考答案：B
