单项选择题
A.make online image backups
B.install Global Mirror at the backup site
C.ship nightly backup tapes to the remote site
D.install Tivoli Storage Manager （TSM） and a tape drive at the backup site
单项选择题 AspartofaBusinessContinuanceproject，acustomerhasestablishedreplicationfrom3spokestoaDRhubwithProtecTIER7610appliances.Eachofthe3spokesisbackingup500GBofnominaldatadailywithanaveragededuplicationratioof10：1.Thereplicationwindowis12hours.Thedatachangerateis15%.WhatistheapproximateminimumrequiredbandwidthforeachWANconnection？（）
单项选择题 AcustomerhasarequirementforDisasterRecoveryforcompliancewithintheirindustry.TheyhaveanRPOof4hoursandanRTOof24hours.Costisaconsideration.WhatisthemostcosteffectiveDRimplementation？（）
单项选择题 AcurrentNseriescustomerhasanIBMSystemStorageN3600.Theyareinterestedinfutureexpansion.Whatistheminimumnumberofdiskdrivesrequiredtopopulatetheexpansionshelf？（）