Prakash Venkatesen - Migrating to FCoE - Interop Mumbai 2009


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Enterprise Data Centers have their storage fabric built using Fibre Channel. FCoE (Fibre Channel over Ethernet) is a new technology which promises network consolidation on top of Ethernet. FCoE retains the management model of FC. FCoE provides I/O consolidation and removes the need for two different networks. Instead, the entire data center can be implemented using Ethernet. With so many advantages for FCoE, is migration simply a rip-and-replace process? Do all FC HBAs just be replaced with FCoE CNAs? Could the pre-standard DCE/FCoE switches result in a proprietary fabric? Is 8G FC a superior option compared to FCoE? This session will answer all these questions.

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Prakash Venkatesen - Migrating to FCoE - Interop Mumbai 2009

  1. 1. Migrating to FCoE Interop Mumbai 2009 Prakash Venkatesen, Rijesh Kunhi Parambattu
  2. 2. Agenda FCoE Technology Overview and Benefits Factors to consider before migrating to FCoE Recommended Migration Strategy 2
  3. 3. Introduction to FCoE FCoE enables SAN traffic to be natively transported over Ethernet networks while protecting the investment customers have made into the FC SAN FCoE specification provides a direct mapping of Fibre Channel over Ethernet FCoE standards body includes all the major SAN vendors such as Brocade, Cisco, EMC, IBM, Intel, Sun, Qlogic, Emulex FCoE specification finalized in June 2009 FCoE products already available 3
  4. 4. Data Center without FCoE • Servers have 2 adapters • Two different networks FC Link Ethernet 4
  5. 5. Data Center with FCoE • Only one server adapter • Single network • One edge switch • Support for FC Storage FC Link Ethernet 5
  6. 6. FCoE Benefits Non-disruptive upgrade to existing FC SAN Retains traditional FC management model Compatibility with existing infrastructure: middleware, drivers, hardware, management software, storage products – minimizing risk and integration costs Reduces CAPEX Single adapter (CNA) sufficient for both storage and Ethernet traffic Reduces cabling Reduces number of switches Reduces OPEX Fewer equipment result in lesser power consumption and cooling requirements Less complex infrastructure Performance: 4G/8G FC to 10G Ethernet; future transition to 40G, 100G 6
  7. 7. Agenda FCoE Technology Overview and Benefits Factors to consider before migrating to FCoE Recommended Migration Strategy 7
  8. 8. Physical Connectivity Requirements Optical connectivity: IEEE 802.3 10Gbps serial Less than 100m MM OM3 recommended to new installs for compatibility with 40/100gE and 16/32GFC Copper connectivity: SFP+ copper definition for external copper connection 10GBase10-KX4/KR internal backplanes and blades Connector for optics and copper: SFP+ 8
  9. 9. FCoE Deployments at the Edge Current generation of FCoE switches support deployment at the edge 9
  10. 10. FCoE Management Management of FCoE technology equivalent to managing FC FCoE CNA is represented exactly like FC HBA FCoE switch zoning configuration works in the same way as FC switch FCoE targets represented as FC targets Topology views – no difference between FC SAN and FCoE SAN Very little re-training needed for administrators 10
  11. 11. Storage Applications Storage applications handling FCoE-attached volumes work the same way as handling FC volumes Applications like Backup, Recovery, Snapshot work exactly like the way they work on FC SAN Migrating a VM from a server with FC HBA to a server with FCoE CNA is seamless 11
  12. 12. Higher Bandwidth Available for Virtual Servers FCoE offers 10G bandwidth that can be used by the various VMs in the server Features such as I/O virtualization ensure very fast I/O Zero copy TX and RX for each VM Server virtualization is a key driver for higher bandwidth needs Opportunity to consolidate to fewer more powerful servers with flexible VM mobility 12
  13. 13. Agenda FCoE Technology Overview and Benefits Factors to consider before migrating to FCoE Recommended Migration Strategy 13
  14. 14. New Data Centers For green-field deployments, the recommended choice is to go in for an FCoE SAN Enables network convergence with 10G as backbone Long term OPEX savings due to FCoE Optical connectivity with multimode OM3 fiber recommended Compatible with 100G, up to a distance of 100m 14
  15. 15. Existing Data Centers For existing data centers, migrating to FCoE involves five stages: 1. Deploying FCoE at the edge For new servers For upgrading existing servers 2. Using FCoE for new storage deployments 3. Migrating existing Ethernet to CEE Switches implementing final CEE standard expected to be available shortly 4. Using FCoE as the core SAN transport instead of FC VE-port support in switches expected to be available in a year 5. Complete SAN refresh: upgrade all FC devices to FCoE 15
  16. 16. Migrating to FCoE – Short Term Stage 1 Stage 2 16
  17. 17. Migrating to FCoE – Long Term Stage 3 Stage 4 Stage 5 17
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