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1、DataManagementintheCloud:DataManagementintheCloud:LimitationsandOpportunitiesLimitationsandOpportunitiesDanielAbadiDanielAbadiYaleUniversityYaleUniversityJanuary30January30th,2009,2009Wantmilkwithyourbreakfast?Wantmilkwithyourbreakfast?••BuyacowBuyacow••BuybottledmilkBuybottledmilk–Bigupfr
2、ontcost–Continuedcost–Producesmore(or–Buywhatyouneedless)milkthanyouneed–Usesupresources–Lessresourceintensive–Timespent–Nomaintenance“maintainingit”–Unpleasantwaste–Wastesomebodyelse’sproductproblemYourComputerisaCowYourComputerisaCow–Yourcomputer•Bigupfrontcost•Producesmore(orless)“milk”
3、thanyouneed•Usesupresources(electricity)•Timespentmaintainingit•Producesunpleasantwaste(heat,noise)–Whatifyoucouldgetcomputingpowerevenmoreconvenientlythanbottledmilk?CloudComputingisBottledMilkCloudComputingisBottledMilk••CompanieswillingtorentcomputingresourcesCompanieswillingtorentcompu
4、tingresourcesfromtheirdatacentersfromtheirdatacenters••Resourcesincludestorage,processingcycles,Resourcesincludestorage,processingcycles,softwarestackssoftwarestacks••GoogleGoogle,Microsoft,Amazon,Sun,Hewlett,Microsoft,Amazon,Sun,Hewlett--Packard,Yahoo,EMC,andAT&TalltakingpartPackard,Yahoo
5、,EMC,andAT&Talltakingpart••E.g.,for$0.10/hourAmazonwillgiveyou:E.g.,for$0.10/hourAmazonwillgiveyou:–1.7GBmemory–Equivalentof1.2GHzprocessor–350GBstorageCloudComputingConcernsCloudComputingConcerns••WhatifmydataorserviceproviderWhatifmydataorserviceproviderbecomesunavailable?becomesunavaila
6、ble?••WhatifmysuppliersuddenlyincreasesWhatifmysuppliersuddenlyincreaseshowmuchtheychargeme?howmuchtheychargeme?••Whataboutsecurity?Whataboutsecurity?••Whataboutlockin?Whataboutlockin?CloudComputingConcernsCloudComputingConcerns••WhatifmydataorserviceproviderWhatifmydataorserviceproviderbe
7、comesunavailable?becomesunavailable?••WhatifmysuppliersuddenlyincreasesWhatifmysuppliersuddenlyincreasesRemember:bottledmilkisSOOOmuchhowmuchtheychargeme?howmuchtheychargeme?cheaperandmoreconvenient!••Whataboutsecurity?Whataboutsecurity?••Whataboutlockin?Whata