单项选择题 软件定义存储（SDS）实质上是利用存储虚拟化软件，将物理设备中的存储（无论是基于块、文件，还是对象）抽象为（），通过虚拟化层进行存储管理。

单项选择题 Duringaplanningsession，thecustomerindicatesthattheyintendtobuildtwoindependenttwo-Nodeclusters（cluster’A’and’B’）thatwillbeprovidedsharedstorageformanIBMTotalStorageFAStT900server.Thecustomerintendstopresent2LUNstocluster’A’，and2LUNstocluster’B’.Allhostswillbedualattachedviafibre.Whatadditionalhardwareorsoftwareisnecessarytomakethisavalidconfiguration？（）A.SANswitchesB.FibrechannelHub（s）C.IBMStorageManagerAgentsD.IBMSubsystemDeviceDriver

单项选择题 AcustomerwouldliketoimplementanIBMSystemStorageDS8000solution.ACapacityMagicstudyhasdeterminedthat500drivesof450GBarerequiredtomeetthecustomer’scapacityrequirements.Limitedspaceisavailableforadditionalsystemsinthedatacenter.Whichsolutionbestmeetsthecustomer’srequirements（）A.DS8800systemwiththreeframesB.DS8800systemwithoneframeC.DS8700systemwithtwoframesD.DS8800systemwithtwoframes

单项选择题 Theerror’invalidbootdisk’means：（）

单项选择题 WhichofthefollowingisTRUEabouttheateprogram？（）