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1、IDCIVIEWTHEDIGITALUNIVERSEIN2020:BigData,BiggerDigitalShadows,andBiggestGrowthintheFarEastDecember2012ByJohnGantzandDavidReinselSponsoredbyEMCCorporationContentforthispaperisexcerpteddirectlyfromtheIDCiView"BigData,BiggerDigitalShadows,andBiggestGrowthintheFarEast,"December2012,sponso
2、redbyEMC.Themultimediacontentcanbeviewedatwww.emc.com/leadership/digital-universe/index.htm.ExecutiveSummary:AUniverseofOpportunitiesandChallengesWelcometothe"digitaluniverse"—ameasureofallthedigitaldatacreated,replicated,andconsumedinasingleyear.It'salsoaprojectionofthesizeofthatuniv
3、ersetotheendofthedecade.ThedigitaluniverseismadeupofimagesandvideosonmobilephonesuploadedtoYouTube,digitalmoviespopulatingthepixelsofourhigh-definitionTVs,bankingdataswipedinanATM,securityfootageatairportsandmajoreventssuchastheOlympicGames,subatomiccollisionsrecordedbytheLargeHadronC
4、ollideratCERN,transpondersrecordinghighwaytolls,voicecallszippingthroughdigitalphonelines,andtextingasawidespreadmeansofcommunications.WiththeriseofBigDataawarenessandanalyticstechnology,thedigitaluniversein2012hastakenonthefeelofatangiblegeography—avast,barelychartedplacefullofpromis
5、eanddanger.Thedigitaluniverselivesincreasinglyinacomputingcloud,aboveterrafirmaofvasthardwaredatacenterslinkedtobillionsofdistributeddevices,allgovernedanddefinedbyincreasinglyintelligentsoftware.1Inthiscontext,atthemidpointofalongitudinalstudystartingwithdatacollectedin2005andextendi
6、ngto2020,ouranalysisshowsacontinuouslyexpanding,increasinglycomplex,andevermoreinterestingdigitaluniverse.ThisisIDC'ssixthannualstudyofthedigitaluniverse,andit'schock-fullofnewfindings:From2005to2020,thedigitaluniversewillgrowbyafactorof300,from130exabytesto40,000exabytes,or40trillio
7、ngigabytes(morethan5,200gigabytesforeveryman,woman,andchildin2020).Fromnowuntil2020,thedigitaluniversewillaboutdoubleeverytwoyears.TheinvestmentinspendingonIThardware,software,services,telecommunicationsandstaffthatcouldbeconsideredthe"infrastructure"ofthedigitaluniverseandtelecommun
8、icati
