AcustomerwithasmallITbudgethasonedatacenter.Theirmainapplicationisadatabase
runningonanIBMSystemStorageDS8000.Thedatabasehasadatachangerateof50%perday.Onceaweek，theymustdoapoint-in-timebackupfromthedatabasetotape.Thetimeittakestorunthebackupnowexceedsthebackupwindowallowed.Thecustomerrequestsaproposaltoreducedatabasedowntimecausedbyrunningbackups，withnearlyzeroimpacttoproductionvolumes.
Inadditiontothetapebackup，whichDS8000featureshouldatechnicalspecialistpropose（）
参考答案：A
