Acustomerneeds2TBofhighavailabilitystorageforeBusinessapplications.TheirserversarecurrentlyconnectedtotwoEMCSymmetrixsubsystemsthatarerunningRAIDTheywanttoconsolidatealloftheRAID1storageintoanIBMSystemStorageDS6800.Whichconfigurationsatisfiesthesecapacityrequirements?（）
A.Twodiskdrivesetsof300GBdrives
B.Fourdiskdrivesetsof146GBdrives
C.Eightdiskdrivesetsof73GBdrives
D.Ninediskdrivesetsof146GBdrives
参考答案：D
