基于MDC數據網格信息服務系統(tǒng)元數據管理的研究.pdf

1、武漢理工大學碩士學位論文基于MDC數據網格信息服務系統(tǒng)元數據管理的研究姓名：陳敏申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：劉泉20060401武漢理』：大學碩士學位論文Inmodemhighperformancecomputing，gridtechnologyisrequiredinagreatcapacityandhighreliabledistributedstoragesystemThestorageresourceofgr

2、idtechnologyisachievedbydatagridwhichisdistributediuwideareacomputingenvironmentsDatagridintegratesallkindsofhighperformancestoragesystemtoaunitoneItCallnotonlyshareresourcesandmakefullyuseofresources，butefficientlyavoid

3、conflictofdataexplodeandlimitedstorageabilityInmanysystems，suchasSRB(StorageResourceBroker)，hierarchicaldirectorystructureisadoptedtomanagemetadataTherearesomesimplefacetsbecauseot’thehierarchyandsingleframecharactersofm

4、etadataGenerallywhenthemetadatabecomesenormous，山eexistingdatamanagementsystemisnotefficienttotransferterabytesorpetabytesofinformationToresolvetheseproblems，storagevirtualizationprovidesUSaneffectivewayStoragevirtualizat

5、ionofDatagridCallresolvetheconflictofdataexplodeandlimitedstorageabilityItformsasinglereflectionofdistributedstoragebydesigningavirtualstoragepool，SOthecomplexityofmanagementindatagridhighperformancestoragesystemisreduce

6、dalotBasedonthoseproblems，themetadatamanagementofDatagridisstudiesinthispaperOnthebasicofadvance酣dsystemsandtheirmetainformationtechnologies，weintroduceaRMDS(replicationbasedMetaDataSystem)toimproveMetal)amController(MDC

7、)InI洲DS，areplicationconsistencymoduleisadopted，andanefficientalgorithmtomanagehighlydynamicmetadatareplicasischarged’r11ecopiedmetadatadirectoriesarctoobtainhighefficiencyPQalgorithmCanaddreplicasofSOLffCefilesinadomaint

8、oimprovetheaccessavailabilityAtthesametime，itgainsrapidresponsetotheenormousaccessing，anditbringsreplicaserveratemporarychangetonotbuildreplicasSOthatthew／refficiencyisimprovedRMDSCallreachbetterefficiencyscalabilityandm