1、 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 1保持存 储 最佳 实 践，无 论 使用什么 样 的 连 接保持数据流量工程 设计 原 则提升可靠性，冗余性及速度保 证 基于角色的 访问 控制增加距离，吞吐量及灵活性减少部署和开通的 时间给 客 户选择 而不是被迫 选择聚合存 储 网 络 意味着 . 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 2一次布 线
2、 ，无限 连 接NASiSCSIFCFCoE NASiSCSIMDS / Nexus统 一网 络FCFCoE 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 311/28/2013 Cisco Systems Inc. 3 I/O consolidation Phase 1 (Mid 2008)Reduction of server adaptersSimplification of access layer cap-ex and op-exEach connection ad
3、ds additional points of failure in the fabricLonger lead time for server provisioningMultiple fault domains complex diagnosticsManagement complexityI/O ConsolidationEnhanced Ethernet and FCoE Ethernet FCLAN SAN BSAN AToday I/O Consolidation with FCoELAN SAN BSAN ANexus 5000 2010 Cisco and/or its aff
4、iliates. All rights reserved. Cisco PublicPresentation_ID 4EthernetIPNetwork Stack ComparisonTCPiSCSIFCIPFCoEFC FCPSCSIPHYSICAL WIRESCSI iSCSI FCIP FCoE FCLess Overheadthan FCIP, iSCSI 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 5Fibre Channel over EthernetWhat
5、 enables it? 10Gbps Ethernet Lossless EthernetMatches the lossless behavior guaranteed in FC by B2B credits Ethernet jumbo framesMax FC frame payload = 2112 bytesEthernetHeader FCoEHeaderFCHeaderFC PayloadCRCEOFFCSSame as a physical FC frameControl information: version, ordered sets (SOF, EOF)Normal
6、 ethernet frame, ethertype = FCoE 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 6Unified FabricWhy? Can you name one technology that you can guarantee will be in the Data Center in 5 years? Its Ethernet ! Cost per byte for storage traffic will be cheaper and more
7、 flexible over an Ethernet fabric 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 7DCB “Virtual Links”An example VL1VL2VL3LAN/IP GatewayVL1 LAN Service LAN/IPVL2 - No Drop Service - StorageAbility to support QoS queues within the “lanes”Campus Core/InternetStorage
8、AreaNetwork 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 8Priority Flow ControlFibre Channel over Ethernet Flow ControlPacketR_RDYFibre ChannelTransmit Queues Ethernet Link Receive BuffersEightVirtualLanesOne OneTwo TwoThree ThreeFour FourFive FiveSeven SevenEig
9、ht EightSix SixSTOP PAUSEB2B Credits Enables lossless Ethernet using PAUSE based on a COS as defined in 802.1p When link is congested, CoS assigned to FCoE will be PAUSEd so traffic will not be dropped Other traffic assigned to other CoS will continue to transmit and rely on upper layer protocols fo
10、r retransmission 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 9Offered Traffict1 t2 t310 GE Link Realized Traffic Utilization3G/s HPC Traffic3G/s2G/s3G/sStorage Traffic3G/s3G/sLAN Traffic4G/s5G/s3G/st1 t2 t33G/s 3G/s3G/s 3G/s 3G/s2G/s3G/s 4G/s 6G/sEnhanced Trans
11、mission StandardBandwidth Management - IEEE 802.1Qaz Required when consolidating I/O Its a QoS problem Prevents a single traffic class of “hogging” all the bandwidth and starving other classes When a given load doesnt fully utilize its allocated bandwidth, it is available to other classes Helps acco
12、mmodate for classes of a “burtsy” nature 2010 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation_ID 10HP/IBM FC Blade SwitchMDS 9124中小企 业 解决方案思科存 储 网 络产 品Cisco NX-OS大型企 业 和运行商解决方案MDS 9506, 9509, 9513Nexus 7010, 7018,7009Nexus 5596UPNexus 2232Nexus 4000Nexus 5548UPMDS 9222iMDS 9148Cisco DCNMFCoEFCNew NewFCoE NewNexus 5010/5020FCoE New
