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

嵌入式系統(tǒng)網(wǎng)絡(luò)分DAS（直接連 NS網(wǎng) MS移DAS：直接連接DAS缺利用率DAS中未被使用 空間 光盤(pán)塔驅(qū)動(dòng)器：一般配置有1~12臺(tái)驅(qū)動(dòng)器，可以是只讀ROM驅(qū)動(dòng)器、CD-R/DVD-R刻錄機(jī)、DVD-RAM驅(qū)動(dòng)器光盤(pán)架：可容納50~600片光盤(pán)，每個(gè)盤(pán)倉(cāng)可容納50片光（盤(pán)庫(kù)內(nèi)置2~12個(gè)盤(pán)倉(cāng)），盤(pán)倉(cāng)可方便光盤(pán)的存放和取用光盤(pán)塔DVD光盤(pán)庫(kù) DVD光盤(pán)庫(kù)4.高性能/價(jià)格比 介質(zhì) DVD光盤(pán)庫(kù)6.可以應(yīng)用于WindowsNT,NetWare,Unix,HP,IBMAIX,SUNOS。8. DVD光盤(pán)庫(kù)11.對(duì)環(huán)境要求RAID0：RAID0對(duì)數(shù)據(jù)進(jìn)行分塊，并分布到不同的磁盤(pán)上。誤有最高的安全性，但不提供糾錯(cuò)RAID2：RAID2使用海明碼進(jìn)行糾錯(cuò)，一般用于大型機(jī)RAID3：RAID3要求磁盤(pán)同步 RAID4：RAID4不要求磁盤(pán)同步 RAID5：RAID5不要求磁盤(pán)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) 區(qū)域網(wǎng)管理節(jié)

N

區(qū)域網(wǎng) 管理軟

SAN組傳輸協(xié)應(yīng)用軟FC-FCFC塊級(jí)SUNNTWindowsFCHPFCIP-ISCSIISCSI塊級(jí)SUNNTWindowsHPIPISCSIE-以太以太網(wǎng)塊級(jí)SUNNTWindowsHPEthernet以太網(wǎng)協(xié)可可復(fù)用的組件開(kāi)發(fā)技管理控制可安裝的管理插管理服元件管網(wǎng)絡(luò)管資源管數(shù)據(jù)管應(yīng)用管基礎(chǔ)服網(wǎng)設(shè) 服務(wù)進(jìn)程內(nèi)進(jìn)程內(nèi)通進(jìn)程間通設(shè)備間通SAN產(chǎn)品的硬StorageAreaNetwork XScale80200with80312Companion256MegabytesSDRAMand8MegabytesofFLASHROM3standard66MHZX64bitPCIDualgigabitEthernet160MB/sSCSIdriveconnector,extendablefor2160MB/sSCSIIOP310AAUwithhigh-speedRAIDcomputationenginefunctionsSAN產(chǎn)品的軟SANManagementmanagementstoragemanagementapplicationserverstoragenodeDiskAccessSAN支持平管理節(jié)點(diǎn)WindowsNT應(yīng)用服務(wù)器Linux節(jié)點(diǎn)LinuxSAN的將NetworkexistingFibreChannelandSCSIendsystemsMixoldFCSANsandnewNativeIPSANsNewNewNativeIPANativeIPFCCampusIPIPIPStorage優(yōu)Accessorsharedataacrossextendeddistancesatspeedsupto10GbsLowerstaffcosts-LittleadditionalIndustry-widefamiliaritywithIPandLowerdeploymentcostsforIPImprovedMatureIPstandards&UseexistingIPSecurity 體系結(jié) UnixLinux

IPIPDataConsolidation/DataReplication/RemoteBackup/RestoreandWebcontentStorageServiceProvidersIPToLinkFCSANExpandeddatasharing,replication,PreserveSANandLANinfrastructureandAAFCCampusFC FCIPkFCFCUseIPtolinkSCSIBuildSANswithSCSIdevicestoexpanddatasharingandreducestoragemanagementcostsUseStandardIProutersandEthernetcoreAASCSICampusSCSIIPSCSISCSI SCSIBuildNewNativeIPNetworkexistingFibreChannelandSCSIendMixoldFCSANsandnewNativeIPNewNewNativeIPANativeIPFCCampusIPiSCSI應(yīng)用方式iSCSIUsingwithNAStoextendtheNAS iSCSI應(yīng)用方式ExtendtheApplicationServer XScale80200with80312Companion512MegabytesDRAMand16MegabytesofFLASHDualGigabitEthernet160MB/sSCSIdriveController,extendablefor2160MB/siSCSIHardware(NotUsing P4512MegabytesGigabitEthernet160MB/sSCSIdriveController,extendablefor2160MB/sRAIDiSCSI產(chǎn)品特iSCSIiSCSIInitiator(forLinux,Windows,Solaris,iSCSIiSCSIManagementDiskAccessWebRaidiSCSI支持平OtherTargetLinux+Linux+

NAS

NFS,

NAS服務(wù)

客戶(hù)客戶(hù)

百兆、千客戶(hù)應(yīng)用服務(wù) 方Windows

文件級(jí)

NASFile

NAS系統(tǒng)結(jié)LinuxLinuxFileFileNAS體系結(jié)P4KernelRAID–DataNetwork-DataNFS, PCI…1~4Multi-Multi-

SCSIDual-Ultra

Root

NAS應(yīng)用方BackboneNetworkinConnectServerandNASasNAS應(yīng)用方MakeonemorenetworkofServersandNAStomakeaserverGigaGigaBit(orFastNAS應(yīng)用方Layer4Layer4GigabitNAS應(yīng)用方式Layer4Layer4GigabitGigabitNAS應(yīng)用方式應(yīng)用服務(wù)

交換

集群配GigabitGigabitDiskDiskClusterNAS產(chǎn)品優(yōu)經(jīng)濟(jì) 解決方插即用的便利性與極佳的可擴(kuò)平臺(tái)無(wú)關(guān)集群支極具親和力的中文網(wǎng)絡(luò)管高度安NAS產(chǎn)品的硬件NASHardware(Using XScale80200with80312Companion512MegabytesDRAMand16MegabytesofFLASHROMDualGigabitEthernet160MB/sSCSIdriveController,extendablefor2160MB/sSCSIIOP310AAUwithhigh-speedRAIDcomputationenginefunctionsNAS產(chǎn)品的硬件NASHardware(NotUsing P4256-2048Megabytes100M/1000MEthernet160MB/sSCSIdriveController,extendablefor2160MB/sSCSIRAIDNAS產(chǎn)品的硬件NASHardware(NotUsing P4256-2048Megabytes100M/1000MEthernetIDEHardSoftRaid/HardRAIDNAS產(chǎn)品的軟NASManagementFileDiskAccessWebRaidMultiLanguageOtherTargetLinux+Linux+BolangNAS產(chǎn)品測(cè)測(cè)試單測(cè)試時(shí)2002-6-通第計(jì)算機(jī)信息系統(tǒng)安全產(chǎn)品質(zhì)監(jiān)督檢驗(yàn)中2002-11-通信息電信計(jì)量測(cè)試中2002-通國(guó)家廣電計(jì)量測(cè)試中2002-通3C2003-通技術(shù)安2002-通 心2002-網(wǎng)絡(luò)的未NAS的技術(shù)未GFS=GlobalFileIntegrationofSANand 技術(shù)比較

FC-

技術(shù)比較項(xiàng)

FC-可管理

服務(wù)器證

網(wǎng)絡(luò)協(xié)網(wǎng)絡(luò)集中置

服務(wù)器認(rèn)網(wǎng)絡(luò)集中置

數(shù)據(jù)集中配硬件連方優(yōu)化方

無(wú)

件服務(wù)文件I/O

件服務(wù)塊I/O

與網(wǎng)絡(luò)服務(wù)以及服務(wù)相塊I/O技術(shù)比較

FC-

ISCSI，

自，易于

自，易于

技術(shù)比較項(xiàng)FC-成成本低成本低成本低成本高可難易易難數(shù)據(jù)安難以備份恢易于備份/復(fù)易于備份/復(fù)易于備份/低高最很集群支否是是是投資/低很很高NAS開(kāi)發(fā)簡(jiǎn)硬件部SCSIIDEHotplug液晶顯示屏（liquidcrystaldisplay：LCD）用段式液晶：常見(jiàn)段式液晶的每字為8段組成，即8LCD矩PC機(jī)—LCD控制器通訊協(xié)PC機(jī)—LCD控制器通訊協(xié)PC機(jī)發(fā)送數(shù)據(jù)…數(shù)據(jù)數(shù)據(jù)…數(shù)據(jù)…節(jié)位位數(shù)據(jù)數(shù)據(jù)…數(shù)據(jù)果LCD硬件及驅(qū)動(dòng)的功 LCD控制模塊功 產(chǎn)生需要顯示的數(shù)循環(huán)獲取新的按鈕軟件內(nèi)FTPNFSBusybox編譯出一個(gè)單個(gè)的獨(dú)立執(zhí)行busybox，它可以根據(jù)配置，執(zhí)行 的功，mv，rm，ls，此外還包括一個(gè)vi。TinyLogin：TinyLogin是一套tinyUNIX ，對(duì)BusyBox是極好的補(bǔ)充提供一個(gè)新的方式管理通/dev的編譯內(nèi)核時(shí)選中：AdvancedPowermanagementBIOSerr=err=RAID是“廉價(jià)磁盤(pán)冗余陣列”（RedundentArrayofInexpensive EmbeddedGeneralPlatformCIFSLinux內(nèi)核裁基 以L(fǎng)inux 版本來(lái)自己CIFSAnimplementationofCIFStargetedforembeddedsystemsSmallPortableANSIOSEasyportingtootherWindowsCE?portStandardsWhyEmbedaCIFSDownloadtoUploadfromDevicesequippedwithCIFSserverappearintheWindows?NetworkNeighborhoodbrowserUnifynetworkattacheddevicesundersinglePoor-man’sNetworkAttachedGeneralSystemCIFSFileCIFS/OSCanCIFSbeimplementedonEmbeddedWhatdoesittakefromtheOStobeabletohostCIFSserver?WhatdoesittakefromtheCIFSprotocolmakeiteasytoimplementonembeddedCIFSEmbeddedEmbeddedUnderlying

EmbeddedVisualitySystem’svCIFS/vNBEmbedded–SupportsthedialectsagainstandWinNTCIFSShouldnotOSSharedFilesystem&ProcessSingle/MultipleCIFSServerArchitecturalWindowsCEProcessesinWindowsCEhaveseparatememoryspacesNetBIOSmayneedtobeusedbyotherclients,notonlySMBClientredirectionisAnotheroptionistouseinternalIPCforreceivedpacketdistributionWindowsCENetBIOSNodeNetBIOSNetBIOSNCNCNCEmbeddedSystemMemoryisatSoareallotherSchedulingpolicy(preemption)anBounded-responsetimealgorithmsaCannotassumememoryaccessfromoneexecutionentitytoanotherEmbeddedSystemProcessmodel/AddressPOSIXFileSystemDynamicMemorySomeimplementationsofmalloc()/free()maynotmeetO(1)requirementsEmbeddedCIFSSolutionsMostly-one-clientArchitectforflexibilityandCarefullytrimallprotocolrelatedinternaldataThekeyisinlimitingtheimplementationFullNTLM0.12functionalitymaybeanSelectlowestdialectthatmatchesCIFSDialect28commandsfor“PCNETWORKPROGRAM27morecommandsfor“LAMMAN4morefor5morefor“LMNTTotalof64Embeddedsystemsshouldadoptthelowestdialectthatprovidessufficientfunctionalityotherwise,paythepriceforadditionalUnless ysingleprocesssomeIPCmustbeNouniformIPConEmbeddedSolution:usetheloop-backIPinterfaceEvenifsingleprocessispossible,thismaynotbethebestchoiceintermsofusabilityExternalCIFSGeneralProblemAfilecopyfromonesystemtoanother,usingidenticalfilesystembydifferentCIFSservers,mustpreserveallfileattributesandinformationAlsodependsonthecopyoperationNotnecessarilyanembedded-systems-onlyThisshouldholdevenfornonNTLM0.12servers,tothebestpossibleProblemStatement--DefinetheOS-specificmeaningofDefinetheCIFSrepresentationofOSSpecificdataOR:GenerallydefinethetwowaymapofOStoCIFSdataCIFSOSServicesNetworkingFileSystemUserPermissions/Attributes/FileFilenamecharacterCaseLongOwnershipistheassociationoffileobjectwithMostEmbeddedOSdonotrecognizethenotionMostEmbeddedFileSystemsdonotSolution:AllowunrestrictedaccesstoauthenticatedtreeSolution:ImplementUserandOwnershipinternaltoCIFSserverFilesystemmustsupportMS-DOSlikepermissionmechanismNeedtomapnativeOSfilesystemspermissionstoMS-DOSbitsNotalwayspossibleorSolution:Solution:CIFSservercanaddpermissioninternaltoserverExample:WindowsCEFileCE

definitionisAttributes&CIFSEssentiallyexpresseseverythinginMS-DOS“l(fā)anguage”P(pán)roblem:howtomapfilesystemattributestoCIFS?Example:OS/2Problem:OtherfileinformationmaynotFilenamecharacterNativefilesystemcharactersetdoesnotnecessarilymatchesthatofcertainCIFSdialects–CIFS/LANMAN1.0ismostlyMS-DOSSolution:defineuniformtranslationAllfilenamesaresubjecttocharactersettranslationonSolution:ConverttouniversallyacceptableCIFSclientcharactersetCharactersettranslationNTLM0.12SupportsClientcharactersetisconvertedtouniversallyacceptableCIFSclientsetSpecialcharacterExample: Host*\/:?”<>|

CaseMustbeclearlyAreOS/FileSystemcaseDoestheOSpreservecasewhen