AUNIXcustomerhasaSymmetrixDMXthathascrashedthreetimesinthepastsixmonths，causingdataloss.Thecustomerisshoppingforanenterprisestoragesolutiontoprovidepoint-in-timecopyfunctionalitywithoutafixedrelationshiptoitsprimaries.WhichIBMsolutionbestmeetsthiscustomer’srequirements（）
A.IBMSystemStorageDS8700andVolumeCopy
B.IBMSystemStorageDS8700andFlashCopy
C.IBMSystemStorageDS8700andFlashCopywiththeNoCopyoption
D.IBMSystemStorageDS8700andFlashCopywiththePersistentoption
参考答案：B
