基于网络的虚拟存储服务及其相关问题的研究

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1、南开大学博士学位论文基于网络的虚拟存储服务及其相关问题的研究姓名：熊伟申请学位级别：博士专业：控制理论与控制工程指导教师：刘璟20040401ABSTRACTWith血edevelopmentofComputerScience，theretainabilityofdatahasincreasedsharply．Atthesametime．thelOSSofsomeimportdataCallbeintolerable．A1lofthQSOneedthestoragesystemtobemoreandmorereliable．Thestoragesystemneed

2、notonlybigcapability,butalsohighavailability．Also，newapplicationsemergeinendlessly,suchasVOD，networkgame，p2pandSOOil．Moreandmoredeviceareportable．Thestructureofstoragesystemhastotakegreatchangeunderthistrend，storagesystemm1．istgivethosedevicesstrongsupport．Thispaperstudiestiledesignof

3、vitalizationstoragesystem，andrelatedreliability,capabilityandnlanagementissueundernetworkenvironment．ProposeGismosystemthatbasesonnewarchitecture．Gismoconsiderhowtodealtheproblemthatdifierentdevicesbaseonauniforillstorageplatformandtheadaptabilityandmanagementissues，givingoutthemethod

4、thatCallprovidestorageserviceforthedevicessuchasmobilepllonesandPDAasweld．Gismo’SgoaliSwherevernetworkreach，whereverstorageget。ThisPaDerdesignsandimplementsadouble—errortolerancedisk-arrayplatformthatcallprovidehighavailablestorageenvironmentforGismosystem．Thispaperalsodesignandimplem

5、entlogstructuredRAIDsystemthatCallmakeuptheshortcomingexistedinnowadayssoftstoragesystem．ThispaperprovideCROSSINGsystemthatcanintegratedifferentstoragearchitectures．Forthesakeofperformancetest，thispaperdesignandimplementWANenviromneutsimulatorthatCansimulatetheinternetenvironmentvivid

6、ly．Thissimulatorprovidethegnaranteeoftest，7lbexplaintheusageofGismosystem，tiffspapergivetwoapplicationsbaseonGismosystem．TheyarenetworkUdiskandnetworkstoragesystemformobilephone．’thisPaDergivesthedetailsofdesignandinlplementation．FinallyaD，1n,thisPerdiscussthereliabilityandperformance

7、takingtestsimulationenvironment，givingthetestresuIt．Keywords：virtualizationstorage，discarray,Erasure，Storage，log，RAID，datalayoutJI第一章绪论1．1信息社会与信息存储随着计算机和互联网的普及，人类社会的数据存储慢慢由纸介质变成了电子介质。越来越多的数据被计算机所存储，而且这个趋势正在加速。数据J下在以惊人的数据递增。随着新技术的发展，人类之间的联系日益紧密，人与人之间的距离也日渐缩小。当人类之间的沟通更加容易的时候，也就意味着数据量的激增

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