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ID:48050961
大小:971.00 KB
页数:27页
时间:2020-01-12
《iSCSI & IP SAN.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、iSCSI&IPSANIPStorageProtocolsFCIP–FCoverIP(tunnel)iFCP–InternetFCP(map)iSCSIiSNS–internetStorageNameServiceiSCSIiSCSIisaNativeIPStorageBlockLevelProtocolDesignedforusedirectlybyenddevicesCommandsstillconformtoT10SCSIspecificationsUsesTCPasitsNetworktransportUsesIPSecfor
2、SecurityNotanFCencapsulationprotocol为什么需要iSCSI解决了SCSI协议在设备数目和连接距离上的限制为SAN提供了一种高性价比的传输协议和各种存储管理结合起来,可以提供灵活的备份、镜像、灾难恢复以及次级存储解决方案iSCSIProtocolFeatures--MultipleTCPconnectionsforasinglesessionCRCdigestsforheaderanddataTCPconnectionfailurerecoveryoptionsOutofOrderdataplaceme
3、ntSupportedOptionsNegotiatedonSessionCreationiSCSIOptionsSecurityParametersLargePDUStore&ForwardHeader&DataDigestsTargetReadPaddingTargetWritePaddingNOP-InPDUtransmitImmediateDataAllowedAuthenticationSupportInitialR2TMultipleR2TAsynchronousMessagesMultipleTCPConnections
4、perLoginSessionSNACKErrorRecoveryLevelandmore…iSCSIiSCSI在SAM中的位置iSCSI协议栈ISCSI协议模型(1)ISCSI协议模型(2)iSCSI网络包的封装(1)iSCSI网络包的封装(2)iSCSIPDUKeyRegistersiniSCSICmdSN:保证命令顺序提交到SCSI中间层(HistorRAID中:SCST)ExpCmdSN:中间层期望得到的命令序号MaxCmdSN:启动器用于判断目标器的命令队列空间:MaxCmdSN-ExpCmdSN+1StatSN,ExpS
5、tatSN,DataSN,R2TSN等等iSCSI节点•iSCSIPortal-acomponentofanetworkentitythathasaTCP/IPnetworkaddressandmaybeusedbyaniSCSInodewithinthatnetworkentityfortheconnection(s)withinoneofitsiSCSIsessions.AnetworkportalinaninitiatorisidentifiedbyitsIPaddress.Anetworkportalinatargetisid
6、entifiedbyitsIPaddressanditslisteningTCPport.•iSCSINode-asingleiSCSIinitiatororiSCSItarget.TherecanbeoneormoreiSCSInodeswithinannetworkentity.Session&ConnectionLoginInitiationiSCSICommandandDataFlowiSCSI研究热点协议性能测试(AperformanceanalysisoftheiSCSIprotocol)软硬iSCSI对比读写长度网络参数
7、(socket缓存、网络延迟)iSCSI参数(?)提高协议性能(AcachingstrategytoimproveiSCSIperformance)缓存(DCD)RDMA(AnOverviewofRDMAoverIP)协议安全(Performancestudyofsoftware-basediSCSIsecurity)IPSEC/SSL协议应用(PerformanceEvaluationofDistributediSCSIRAID)分布式应用存储管理iSCSIHBA卡Adaptec7211C(Copper)$660.00Adaptec
8、StorageProtocolAccelator(SPA)forcompleteTCP/IPoffloadandanon-boardprocessorforiSCSIfunctionsAlacritechSES1001H
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