AcustomerusinganIBMSystemStorageDS8300isfacingperformanceproblems.Aftertheanalysisbythetechnicalspecialist，thediagnosisindicatesthatthecachehitsmaybeimprovedbyacacheupgrade.Howcanthesystembemonitoredinordertocheckthebenefitsofthecacheupgrade（）
A.usingthevmstatcommandontheAIXserversconnectedviaSANtotheDS8300system
B.lookingatthenumberofI\/OmanagedbytheDS8300system
C.readingtheperformancereportsviaTotalStorageProductivityCenterforDisk
D.generatingreportsusingtheTotalStorageExpert
参考答案：C
