嵌入式系統(tǒng)4設(shè)計(jì)網(wǎng)絡(luò)存儲(chǔ)

網(wǎng)絡(luò) 可以應(yīng)用于WindowsNT,NetWare,Unix,HP,IBMAIX,SUNOS。 RAID0：RAID0對(duì)數(shù)據(jù)進(jìn)行分塊，并分布到不同的磁盤上。RAID3：RAID3要求磁盤同步 RAID4：RAID4不要求磁盤同步 RAID5：RAID5不要求磁盤同步，使用分布式校驗(yàn)。RAID5比RAID4實(shí)現(xiàn)更高的吞吐率，對(duì)數(shù)據(jù)進(jìn)行校驗(yàn)，可恢復(fù)單個(gè)磁網(wǎng)絡(luò)

N

SUNNTWindowsFCHPSUNNTWindowsHPIPSUNNTWindowsHP StorageAreaNetwork XScale80200with80312Companion256MegabytesSDRAMand8MegabytesofFLASHROM3standard66MHZX64bitPCIDualgigabitEthernet160MB/sSCSIdriveconnector,extendablefor2160MB/sSCSIIOP310AAUwithhigh-speedRAIDcomputationenginefunctionsstoragenodeDiskAccess節(jié)點(diǎn)LinuxNetworkexistingFibreChannelandSCSIendsystemsMixoldFCSANsandnewNativeIPSANsNewNewNativeIPANativeIPFCCampusIPIPIPStorageAccessorsharedataacrossextendeddistancesatspeedsupto10GbsLowerstaffcosts-LittleadditionalIndustry-widefamiliaritywithIPandLowerdeploymentcostsforIPMatureIPstandards&UseexistingIPSecurity LinuxUnixLinuxUnix

IP

DataReplication/RemoteBackup/RestoreandWebcontentIPToLinkFCSANExpandeddatasharing,replication,PreserveSANandLANinfrastructureandAAFCCampusFC FCIPkFCFCUseIPtolinkSCSIBuildSANswithSCSIdevicestoexpanddatasharingandreducestoragemanagementcostsUseStandardIProutersandEthernetcoreAASCSICampusSCSIIPSCSISCSI SCSIBuildNewNativeIPNetworkexistingFibreChannelandSCSIendMixoldFCSANsandnewNativeIPNewNewNativeIPANativeIPFCCampusIPiSCSIUsingwithNAStoextendtheNAS 512MegabytesDRAMand16MegabytesofFLASH P4RAIDiSCSIiSCSIInitiator(forLinux,Windows,Solaris,iSCSIiSCSIManagementDiskAccessWebRaidOtherTargetLinux+Linux+

NFS,

Windows

NASFile

LinuxLinuxFileFileP4KernelRAID–DataNetwork-DataNFS, PCI…1~4

SCSIDual-Ultra

Root

BackboneNetworkinConnectServerandNASasMakeonemorenetworkofServersandNAStomakeaserverGigaGigaBit(orFastLayer4Layer4Layer4Layer4應(yīng)用服務(wù)

交換

DiskDiskCluster

XScale80200with80312Companion512MegabytesDRAMand16MegabytesofFLASHROMDualGigabitEthernet160MB/sSCSIdriveController,extendablefor2160MB/sSCSIIOP310AAUwithhigh-speedRAIDcomputationenginefunctions P4160MB/sSCSIdriveController,extendablefor2160MB/sSCSIRAID P4256-2048MegabytesIDEHardSoftRaid/HardRAIDNASManagementFileDiskAccessWebRaidMultiLanguageOtherTargetLinux+Linux+心GFS=GlobalFileIntegrationofSANand 證置置無ISCSI，復(fù)復(fù)低高否是是是低高IDE段式液晶：常見段式液晶的每字為8段組成，即8………節(jié)位位…果 FTPNFS 。 /dev的編譯內(nèi)核時(shí)選中：AdvancedPowermanagementBIOSerr=err=（RedundentArrayofInexpensive GeneralCIFS CIFSAnimplementationofCIFStargetedforembeddedsystemsSmallPortableANSIOSEasyportingtootherWindowsCE?portWhyEmbedaCIFSDownloadtoUploadfromDevicesequippedwithCIFSserverappearintheWindows?NetworkNeighborhoodbrowserUnifynetworkattacheddevicesundersingleCIFSFileCIFSFileCanCIFSbeimplementedonEmbeddedWhatdoesittakefromtheOStobeabletohostCIFSserver?WhatdoesittakefromtheCIFSprotocolmakeiteasytoimplementonembeddedCIFSEmbeddedEmbedded

VisualitySystem’svCIFS/vNBEmbedded–SupportstheandWinNTsCIFSShouldnotOSSharedFilesystem&WindowsCEProcessesinWindowsCEhaveseparatememoryspacesNetBIOSmayneedtobeusedbyothers,notonlySMBredirectionisAnotheroptionistouseinternalIPCforreceivedpacketdistributionWindowsCENetBIOSNode2NC2NC3NCNCNCNetBIOSMemoryisatSoareallother Bounded-responsetimealgorithmsaCannotassumememoryaccessfromoneexecutionentitytoanotherEmbeddedSystemPOSIXFileSystemSomeimplementationsofmalloc()/ ()maynotmeetO(1)requirementsEmbeddedCIFSSolutions ArchitectforflexibilityandCarefullytrimallprotocolrelatedinternaldataThekeyisinlimitingtheimplementationFullNTLM0.12functionalitymaybeanSelectlowestdialectthatmatchesCIFSDialect28commandsfor“PCNETWORKPROGRAM27morecommandsfor N4morefor5morefor“LMNTTotalof64Embeddedsystemsshouldadoptthelowestdialectthatprovidessufficientfunctionalityotherwise,paythepriceforadditional ysingleprocesssomeIPCmustbeNouniformIPConEmbeddedSolution:usetheloop-backIPinterfaceEvenifsingleprocessispossible,thismaynotbethebestchoiceintermsofusability CIFSAfilecopyfromonesystemtoanother,usingidenticalfilesystembydifferentCIFSservers,mustpreserveallfileattributesandinformationAlsodependsonthecopyoperationNotnecessarilyanembedded-systems-onlyThisshouldholdevenfornonNTLM0.12servers,tothebestpossibleProblemStatement--DefinetheOS-specificmeaningofDefinetheCIFSrepresentationofOSSpecificdataOR:GenerallydefinethetwowaymapofOStoCIFSdata OSServicesFileSystemUserFilenamecharacterCaseLongOwnershipistheassociationoffileobjectwithMostEmbeddedOSdonotrecognizethenotionMostEmbeddedFileSystemsdonotSolution:AllowunrestrictedaccesstoauthenticatedtreeSolution:ImplementUserandOwnershipinternaltoCIFSserverFilesystemmustsupportMS-DOSlikepermissionmechanismNeedtomapnativeOSfilesystemspermissionstoMS-DOSbitsNotalwayspossibleorSolution:CIFSservercanaddpermissioninternaltoserverExample:WindowsCEFileCE

definitionisAttributes&CIFSEssentiallyexpresseseverythinginMS-DOS“l(fā)anguage”Problem:howtomapfilesystemattributestoCIFS?Example:OS/2Problem:OtherfileinformationmaynotNativefilesystemcharactersetdoesnotnecessarilymatchesthatofcertainCIFSdialects–CIFS/LANMAN1.0ismostlyMS-DOSSolution:defineuniformtranslationAllfilenamesaresubjecttocharactersettranslationonSolution:ConverttouniversallyacceptableCIFScharactersetCharactersettranslationNTLM0.12Supports charactersetisconvertedtouniversallyacceptableCIFS Example: Host CaseMustbeclearlyAreOS/FileSystemcaseDoestheOSpreservecasewhenaccessingLongWhatistobedonewithlongSolution:maptouniqueDoesnotpreserveSolution:movetohigherCIFSsemanticforsharingmustbeMaybepatiblewithunderlyingfileSoluti