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- W87232861 abstract "HRaid:aFlexibleStorage-systemSimulatorToniCortesJes usLabartaUniversitatPolitecnicadeCatalunya-Barcelonaftoni,jesusg@ac.upc.es-http://www.ac.upc.es/hpcAbstractClustersofworkstationsarebcomingaquitepopularplatformtorunhigh-performanceappli-cations.Thisfacthasstressedtheneeofhigh-performancestoragesystemsforthiskindofenvi-ronments.Inordertodesignsuchsystems,weneedadequatetools,whichshouldbeexibleenoughmodelaclusterofworkstations.Currentlyavailablesimulatorsdonotal lowheterogeneity(severalkindofdisks),hierarchiesorresourcesharing(amongothers),whicharequitecommoninclusters.To l lthisgap,wehavedesignedandimplementeHRaid,whichisaveryexibleandeasytousestorage-systemsimulator.Inthispaper,wepresentsimulator,itsmainabstractionsandsomesimpleexamplesofhowitcanbeused.Keywords:Storage-systemmo delingandsimula-tion,HeterogeneousRAIDs,Clustercomputing1Intro ductionOneofthemaincharacteristicsaclusterworkstationsisitsabilitytogrowheneverneeded.Ifmorestoragespaceisrequired,anewdiskcanb eeasilyattached.Thisendsupmakingitverydiculttohaeanhomoge-neoussetofdisks,unlessalldisksarereplacedwhenanewoneisb ought.Allsimulationto olsthatarecurrentlyavailableassumesetofho-mogeneouscomp onents[1 ,2 ,3 ].Thiskindofto olsisadequatetosimulatestoragesystemforparallelmachines,butitlackstheexibilitytostudythep erformanceofanI/Osystemforaclusterofworkstations.Itisalsoquitecommon,inacluster,tohaveThisworkhasb eensupp ortedbytheSpanishMin-istryofEducation(CICYT)undertheTIC-98-0511contract.plentyofresourcesharingwithinastoragesys-tem.Mostto olsdonottakeintoaccountthee ectofnetworkorCPUcontention.Theseissuescannotb eleftasideasthep erformancemaydep endonthemheavily.Web elievthatitisveryimp ortanttohato olsthatallowresearcherstoseethee ectofagivenp olicyusingmorerealmo delsthantheonescurrentlyavailable.HRaidisnewto olthatgivesthep ossibilitytoresearcherstomo delheterogeneousstoragesystemsuchaRAIDswherethedisksarenothomoge-neous.Itcanalsob eusedtomo delhierar-chiesofRAIDsoranyotherkindnetwork-distributedsystemduetoitsgreatcon gura-tionexibility.Ofcourse,italsoallowstomo deltraditionalenvironmentswithhomoge-neouscomp onents,orevensingledisksystems.Furthermore,itisalsoexibleenoughtoallowanyresearchertoaddnewcomp onentsormo delsforalreadyexistingcomp onents(suchasdisksornetworks).Inthispap er,wewillpresentthemainfunc-tionalitiesofthisnewto olandthecomp onentsthathavealreadyb eenimplemented,whichshouldb eenoughformostresearchworks.1.1KindofProblemstob eAddressedUsingHRaidTogetab etterideaofhowthisnewto olcouldb eused,wepresentafewexamplequestionsthatcanb eansweredusingit.Whatisthee ectofheterogeneityinanetworkRAID?Hoisthep erformancea ectedifanewandfasterdiskisaddedtotheRAIDsystem?Isitworthbuy" @default.
- W87232861 created "2016-06-24" @default.
- W87232861 creator A5035035680 @default.
- W87232861 creator A5090462264 @default.
- W87232861 date "1999-01-01" @default.
- W87232861 modified "2023-09-25" @default.
- W87232861 title "HRaid: A Flexible Storage-system Simulator." @default.
- W87232861 cites W1590118141 @default.
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- W87232861 hasPublicationYear "1999" @default.
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