惠普存储精华培训-day 3

©2010Hewlett-PackardDevelopmentCompany,L.P.TheinformationcontainedhereinissubjecttochangewithoutnoticeHPUX现场实用技能培训Day3QianYunSWATTeam2Agenda–Day3•SAN•EVA•XP3SAN4SANTopologiesThreeconnectiontopologiesoutlinedbytheFibreChannelstandard:•Point-to-point(FC-P2P)•ArbitratedLoop(FC-AL)•SwitchedFabric(FC-SW)Youcandistinguishbetweenthedifferenttopologiesbytwocriteria:1)Dowehavealoop?2)Isthereaswitchconnected?(*)-alsoknownasdirectfabricattach(DFA)5PrivateLoop•Theprivateloopcanaccommodateupto126NL_ports•AprivateloopdoesnotcontainanFL_port•Containsonlydeviceswhicharenotfabric-aware•CannotcommunicatewithfabricdevicesTxRxRxTxServerTapeLibraryHUBNL-portNL-port6FibreChannelHUBSwitchedFabricTopologyNodeBN_Port0F_PortTransmitterReceiverN_Port1TransmitterReceiverNodeAF_PortReceiverTransmitterNodeANL_PortTxRxFL_PortTransmitterReceiverFC_ALNL_PortsfabricNodeBNL_Port0RxTxNodeDNL_Port0TxRxN_Port0TransmitterReceiverIP161718192021222324252627282930311213141589101145670123SANSwitch2/327PublicLoop•IfthereisanactiveFL_portontheloop,itisconsideredapublicloop.Thepublicloopcanaccommodateupto126NL_portsandoneFL_port•TheFL_portextendsthenumberofnodesforcommunication.Usingthisport,aprivateloopcanbeconnectedtothepublicloop.HUBHUB8FabricaddressingDomainAreaPortFabric/Switched(FLOGI)Publicloop(FLOGI+loop)Privateloop(NoFLOGI)N-PortNL-PortQL-Port8-bits8-bits8-bits99B-SeriesSANswitchFibreChanneldeviceaddressesNNNN00“NNNN00”isthegenericAddressofanyFabricDevicethathasloggedintotheFabric(FLOGI).DeviceFLOGIresponseassignsa24-bitaddressNativeModehas2ndbyte1stnibblewitha1.CorePIDmodeusesentire2ndbyte=AREACOREPIDFabricAddressNativeModeDomainAreaPort(DEV)011100(Port1)021C00(Port12)CORE_PIDModeDomainAreaPort(DEV)010100(Port1)020C00(Port12)021000(Port16)013300(Port51)1010Portaddressing.11Sharedareanumbers.12级联考虑的内容•DomainID•configshow•Zoning配置•LongDistance设置13ChangestotheFabric−Addinganewswitch/fabric•NotpreviouslyhadzoningorcfgClearcommandhasbeenrun•Whenadded,allzoneconfigurationdataiscopiedfromthezonedfabricintothenewswitch/fabric−Joiningtwoswitches/fabric•Ifbothfabricshaveidenticalzoneconfigurationdataandthesameconfigurationisenabled,fabricsjoinforonelargerfabric•Iffabricshavedifferentzoneconfigurationdata,theISLissegmented.Oneswitchconfigurationmaybecomedisabled.−Splittingfabric•IfanISLgoesdown,causingafabrictosplitintotwoseparatefabrics,theneachnewfabricretainsthesamezoneconfiguration•Fabricwillre-mergewhenISLisbackupandnozonechangeshavebeenmade14常用命令•switchshow•nsshow•nsallshow•configshow•fanshow•psshow•tempshow•errshow–r•errdump•fabricshow•portperfshow•portcfgshow•porterrshow•supportshow•cfgshow•15EVAVirtualstorageterminology(1of2)−Storagesystem(cell)—AninitializedpairofHSVcontrollerswithaminimumofsixphysicaldiskdrives−Diskgroup—Agroupofphysicaldisksfromwhichyoucancreatevirtualdisks−Virtualdisk—Alogicaldiskwithcertaincharacteristics,residinginadiskgroup−Virtualdiskleveling—Distributionofalluserdatawithinthevirtualdisksinadiskgroupproportionallyacrossalldiskswithinthediskgroup−Distributedsparing—Allocatedspaceperdiskgrouptorecoverfromphysicaldiskfailureinthatdiskgroup−Redundantstorageset(RSS)—Asubgroupingof6to11driveswithinadiskgroupthatallowfailureseparation−Reconstruction—Processbywhichdataisregeneratedandmoved(migrated)tootherstorageinadiskgroupaftertheoriginalvolumeismadeinaccessible1–2Storagesystem−AninitializedpairofHSVcontrollerswithaminimumofsixphysicaldiskdrives(sometimescalledacell)−Requiresanameupto20characterslong•Specialcharactersarenotallowed(forexample,?,“,/,\)•Notwoconsecutivespacesareallowed•Nameischangeable−Systeminitialization•Makesthestoragesystemreadyforuse•Bindsthecontrollerstogetherasanoperationalpair•Createsthefirstdiskgroup•Establishespreliminarydatastructuresonthediskarray(metadata)Diskgroup−Agroupofphysicaldisks•Maximumof16diskgroupsperEVA8000/8100orEVA6400/8400,14fortheEVA6000/6100,7fortheEVA4000/4100,and12fortheEVA4400•Minimumnumberofphysicaldiskdrivesinadiskgroupis8(6forSSDs,butwithamaximumof8intheEVA4400/6400/8400)•MaximumnumberofphysicaldiskdrivesfortheEVA8000/8100is240,324fortheEVA8400,216fortheEVA6400,112fortheEVA6000/6100,56fortheEVA4000/4100,and96fortheEVA4400•Basicorenhancedtype(forEVA4400/6400/8400)•Unassignedornewdiskscanbeaddedtoanexistinggroup•Mixeddrivesizeswithinagroupareallowed−Diskfailureprotectionlevel•None,single,ordoublediskfailures(notconcurrentfailure)•DefaultisSingleVirtualdisk(1of2)−Alogicaldiskwithcertainattributes,suchassizeandVRAIDlevel,residinginadiskgroupandspanningallmembersofthediskgroup−ContainsacollectionofRStores,eachwith8MBofuserspace,andeachhavingPSEGswitharedundancypolicy−Createdin1GBincrementsfrom1GBtoasizeupto32TB−Canbesourcevirtualdisk,snap,andcontainer−Maximumof2048virtualdisksperstoragesystemfortheEVA6400/8400(1024forothers)•Iftryingtocreatemorethanmaximum,SCMIreturnsanerror•LargeLUNsallowedforXCS09500000−2TBto32TB−Each2TBLUNconsumesonelogicaldiskobject1–10Virtualdisk(2of2)−FourpossibleVRAIDlevels•VRAID0orstriping(none)−Distributedacrossalldisksinagroup−100%ofdiskgroupcapacity•VRAID