云计算入门(英文版)

SunCloudComputing|SunCloudComputing|TableofConTenTsCloudComputingataHigherLevel...............................................4WhyCloudComputing?.......................................................5Clouds:MuchMoreThanCheapComputing.................................5ITEfficiencyonaWholeNewScale..................................6Faster,MoreFlexibleProgramming..................................7CompellingNewOpportunities:TheCloudEcosystem.........................8HowDidCloudComputingStart?..........................................9HarnessingCloudComputing.............................................0UsetheCloud...................................................0LeveragetheCloud...............................................0BuildtheCloud..................................................BetheCloud.....................................................Public,Private,andHybridClouds..........................................CloudComputingDefined........................................................CornerstoneTechnologies.................................................3TheArchitecturalServicesLayersofCloudComputing.........................3SoftwareasaService(SaaS)........................................3PlatformasaService(PaaS)........................................4InfrastructureasaService(IaaS)....................................4InsidetheCloud................................................................4Virtualization............................................................5OperatingSystemVirtualization.....................................6PlatformVirtualization.............................................6NetworkVirtualization.............................................6ApplicationVirtualization..........................................7TableofConTenTsSunCloudComputing|3SoftwareDeployment....................................................7SoftwarePackaging...............................................7MachineImages..................................................8Sun’sCloudPhilosophies.......................................................8OpenSourceandInteroperability..........................................8ComprehensiveProductPortfolio...........................................9Enterprise-gradeSystemicQualities.........................................9Efficiency/Economy...............................................0Reliability/Availability.............................................0Density/Scalability................................................0Agility...........................................................0Security.........................................................NewSunTechnologiesRelevanttotheCloud......................................Virtualization...........................................................ModularSystems........................................................3OpenStorage............................................................3WhatYouCanDo...............................................................5Copyright1994-2009SunMicrosystems,Inc.TableofConTenTsSunCloudComputing|4CloudCompuTingaTaHigHerlevelinmanyways,cloudcomputingissimplyametaphorfortheinternet,theincreasingmovementofcomputeanddataresourcesontotheWeb.butthere’sadifference:cloudcomputingrepresentsanewtippingpointforthevalueofnetworkcomputing.itdelivershigherefficiency,massivescalability,andfaster,easiersoftwaredevelop-ment.it’saboutnewprogrammingmodels,newiTinfrastructure,andtheenablingofnewbusinessmodels.Forthosedevelopersandenterpriseswhowanttoembracecloudcomputing,Sunisdevelopingcriticaltechnologiestodeliverenterprisescaleandsystemicqualitiestothisnewparadigm:Interoperability—Whilemostcurrentcloudsofferclosedplatformsandvendorlock-in,developersclamorforinteroperability.Sun’sopen-sourceproductstrategyandJava™principlesarefocusedonprovidinginteroperabilityforlarge-scalecomputingresources.Thinkoftheexistingcloud“islands”mergingintoanew,interoperable“Intercloud”whereapplicationscanbemovedtoandoperateacrossmultipleplatforms.High-densityhorizontalcomputing—Sunispioneeringhigh-power-densitycompute-nodearchitecturesandextreme-scaleInfinibandfabricsaspartofourtop-tierHPCdeployments.Thishigh-densitytechnologyisbeingincorporatedintoourlarge-scaleclouddesigns.Datainthecloud—Morethanjustcomputeutilities,cloudcomputingisincreasinglyaboutpetascaledata.Sun’sOpenStorageproductsofferhybriddataserverswithunprecedentedefficiencyandperformancefortheemergingdata-intensivecomputingapplicationsthatwillbecomeakeypartofthecloud.Thesetechnologybetsarefocusedondrivingmoreefficientlarge-scaleclouddeploymentsthatcanprovidetheinfrastructurefornext-generationbusinessopportunities:socialnetworks,algorithmictrading,continuousriskanalysis,andsoon.CloudCompuTingaTaHigHerlevelSunCloudComputing|5WhyCloudComputing?“Theriseofthecloudismorethanjustanotherplatformshiftthatgetsgeeksexcited.ItwillundoubtedlytransformtheITindustry,butitwillalsoprofoundlychangethewaypeopleworkandcompaniesoperat