思科IP存储网络架构

1iSCSI思科IP存储网络架构思科系统(中国)网络技术有限公司•IP相关协议•IPSAN的设计•IPSAN的案例分析•思科智能存储网络平台•总结议程3ECComNetworkStorageStorageSystemLtd.与MetroDWDM:通过可跨越城域范围或广域网范围的业务连续保障FibreChannelSANIPNetworkFCIP7200RouterFibreChannelSANDisasterRecoverySiteStorageONS15540OpticalMANFibreChannelSANONS15540TapeLibraryiSCSI-enabledServersiSCSIiSCSI:通过IP网络的低成本连接增加存储的使用范围及简化管理的复杂度来降低存储网络的总体拥有成本(TCO)SN5428FCStoragePool7200RouterMDS9000MDS9000w/IPSModuleMDS9000w/IPSModule4ECComNetworkStorageStorageSystemLtd.–介绍•iSCSI–InternetSCSIProtocol...isanewtransportprotocolforSANs...leveragesanEthernetinfrastructure...representschoiceforSANconnectivity...isverycomplementarytoFibreChannel...EnableslowercostSANinfrastructure•ManynewiSCSIsolutionsMidrangeserverandapplicationconnectivityBladeserverSANconnectivityHighdensityserverclusterconnectivityLongerdistanceSANconnectivityNote:Can’tchangespeed-of-lightlimitations•iSCSIcombinesthespeedofblockaccesswiththecostofEthernetiSCSI-enabledHostsStoragePoolCatalyst6500IPNetworkFCFabriciSCSIiSCSIiSCSI5ECComNetworkStorageStorageSystemLtd.已经成为标准并得到行业支持•TheiSCSIprotocolisastandardmaintainedbytheIETFIPStorage(IPS)workinggroup•Standardbasedonrev.20draft-ietf-ips-iscsi-20.txt•CiscoandIBMco-authoredoriginaliSCSIprotocoldraft•ManyotherdraftsandstandardsmaintainedbytheworkinggroupiSCSIsecurity(draft-ietf-ips-security)iSCSInaming(draft-ietf-iscsi-name-disc)iSCSImanagement(draft-ietf-iscsi-mib)iSCSIboot(draft-ietf-iscsi-boot)(Filesystems,databases)6ECComNetworkStorageStorageSystemLtd.的比较NASHostComputerOSfilesystemApplicationDatabaseSCSIdevicedriverSCSIBusAdapterLVMRawPartitionHostComputerOSfilesystemApplicationDatabaseSCSIdevicedriverFibreChannelBusAdapterLVMRawPartitionHostComputerNICApplicationDASSANiSCSIFileI/OIPNetworkNASApplianceDeviceDriverNICTCP/IPStackFileSystem+LVMBlockI/OBlockI/OOSFileSystemNWRedirectorHostComputerOSfilesystemApplicationDatabaseLVMRawPartitionNICIPNetworkiSCSILayerTCP/IPStackNFS/CFISTCP/IPStackBlockI/OBlockI/OSANSAN8ECComNetworkStorageStorageSystemLtd.测试•Rapidlyemergingastheapplicationchoiceformessagingandcollaboration•Requiresalargevolumeofstorage,butlittlethroughput•MinimalCPUutilizationdifferencebetweeniSCSIsoftwaredriversandFibreChannelHBAsStorageNetworkThroughputMB/sUsersTheoreticalMaximumThroughputof100MbpsEthernetServerCPUUtilization%CPUUtilizationMicrosoft“loadsim”generatorUsers9ECComNetworkStorageStorageSystemLtd.基于主机的镜像:远程iSCSIIPNetworkFCRemoteMirrorSN5428StorageRouterorMDS9000withIPS-8•E.g.SupplementanexistingFibreChannelHBAattachedhostserver•EmployiSCSIoverexistinginter-siteIPnetwork–iSCSIdriveronHostServer–VolumeManageronHostServere.g.WindowsLDMorVeritasVolumeManager•HAthroughredundantlinks,routersandclusteredStorageRouters•QoS:LLQtominimizequeuinglatencyonWANlinkFCLocalMirrorPrimarySiteDisasterRecoverySiteiSCSIMDS900010ECComNetworkStorageStorageSystemLtd.基于主机的镜像:本地及远程iSCSIIPNetworkFCFCiSCSIPrimarySiteDisasterRecoverySite•iSCSIusedforlocalandremotemirrors•EachMirrorappearstoiSCSIasaseparatetarget–canusesingleormultipleNICs–HAClusterateachsitetoenhanceavailability–VolumeManagermultipathingtofurtherenhanceavailability•HAthroughmultiplelinks,routers,switches,anddualStorageRoutersateachsiteSN5428StorageRouterorMDS9000withIPS-8SN5428StorageRouterorMDS9000withIPS-811ECComNetworkStorageStorageSystemLtd.的介绍•允许SAN孤岛实现跨IP网络进行互连的技术.•每个互连通道称为FCIP连接并可包括一个或多个TCP的对话.•在FCIP连接的每个端点均分配一个虚拟E_Port(VE_Port).•VE_Port之间的通讯和普通的E_Port通讯是一样的.•成功连接的结果(如果所有均成功的话…)是完全地实现了光纤通道交换架构的合并.•TCP/IP用于提供拥塞控制及无误数据的按序传递的底层传输平台.FCSANFCSANFCIPTunnelIPNetwork12ECComNetworkStorageStorageSystemLtd.适用的存储应用例子•远程复制EMCSRDFHitachiTrueCopyHPContinuousAccess(CA)HPDRMIBMPPRC•远程LAN-Free备份•园区内SAN的互连13ECComNetworkStorageStorageSystemLtd.使用环境短距离~=60km•1Gb-OC48orHigher•Relativelylowlatency•Synch/AsynchApplications本地数据中心SAN网关MetroEthernetFCIPSANFCIPSANIPRoutedWANFCIPSANFCIPSANSONETFCIPSANFCIP中距离~=160km长距离160km远程数据中心•TypicalOC3/OC12•Relativelylowlatency•Mainlyasynchronous•Suitableforsomesynchronousapps•Lowspeed(T1–DS3)•Higherlatency•Longerdistance•Mainlyasynchronous本地数据中心本地数据中心远程数据中心远程数据中心网关网关网关网关网关14ECComNetworkStorageStorageSystemLtd.应用环境示范:星型远程连接远程站点BackupServersFCIPIPNetworkFCFabricFCFabricFCFabricFCIPFCIPFCIPMDS9509IPS-87200VXRw/PA-FC-1GS