AbankingcustomerplanstoimplementaBladeCenterHchassis.TheyplanforsevenHS22blades，sixHX5bladeswithMAX5，one1UexternalFibreChannelswitch，andtwo3UFibreChannelstoragedeviceswithfourteen146GBdrives.Whichistheminimumamountofrackspacerequiredtoimplementthesolutionofthefollowing？（）
A. 32U
B. 21U
C. 25U
D. 22U
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AcustomerwantstocollectperformancedatafromanewlyinstalledIBMSystemStorageDS8300todetermineifthesystemmeetsexpectedbenchmarksusingtheirapplicationtestdata.Whichtoolbestgatherstheperformancedata（）
A. IBMDSStorageManager
B. IBMTivoliStorageResourceManager
C. IBMTotalStorageProductivityCenterforDisk
D. IBMTotalStorageProductivityCenterforData
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