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Cisco Theater presentation from Emc World 2013

Cisco Theater presentation from Emc World 2013

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  • 1. 1© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 1Fibre Channel, FCoE, and FCIP, oh My:Evaluating Storage Protocols in DistanceSolutionsNick Furman, Technical Marketing EngineerCo-Sponsoredby Intel®
  • 2. 3© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicDistanceWhat do I need to know about storagedistance?How far can I go?Am I using the right tool for the job?
  • 3. 4© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicDont miss out on any of them!Know your physical layerKnow your protocolKnow your limitations!Three Major Things
  • 4. 5© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 5Lets Get Physical!
  • 5. 6© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicHow to Differentiate?OpticsFibre Channel OpticsEthernet Optics-Yes, can transmit Fibre Channel too!SpeedPower (i.e., Strength)-Translates to distance
  • 6. 7© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicDistance Requires Specialized SolutionsOpticsSFP-Up to 4GbpsSFP+-8 Gbps+Longer distances oftenmean lower throughputspeedskm1 km5 km10 km40 km100 kmFC-SREth-SRFC-MRFC/Eth-LRFC/Eth-ER300m860m4 kmCWDM DWDM10 km40 km100 km2000+km
  • 7. 8Single Mode FibreMultimode Fibre© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicThree Major TypesCablesCopper-based-Generally not suitable for distances greater than 30m-So... not a "long-distance solution"Optical-SMF: "Single Mode Fibre"-Small diameter core-Allows only one mode of light to be sent-Longer effective distance - 100 km or less-Need transceivers that have more power-MMF: "Multi-Mode Fibre"-Larger diameter core-Allows multiple paths (modes) to be sent at the same time-Shorter effective distance - around 16 km or less-Generally uses cheaper equipment and easier to interconnect-Good for general purpose applications (e.g., campus, building deployments)-Often orange in color
  • 8. 9© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicThe Dark And Mysterious ForceDark FibreCabling laid out bytelecommunication companiesthat isnt being used (dark vs. lit)Leased lines to companies whowish to communicate over greatdistancesFollows same rules as wevealready gone over
  • 9. 10© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 10Use The Proper Protocol
  • 10. 11© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicIts All About the SourceFibre Channel (FC)Fibre Channel is a source-basedmechanism for lossless deliveryBuffer to buffer (B2B) credits keep FCframes in order1 buffer = 1 frame
  • 11. 12© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicMo Buffers Mean Mo DistanceFC DistanceLonger distances require more time to receive acknowledgements(Very expensive to not use a pipe)Ports can "donate" buffer credits to other portsCan send more data before acknowledgement
  • 12. 13© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicOn the Receiving EndFibre Channel over Ethernet (FCoE)FCoE is a receiver-basedmechanism for lossless deliveryReceiving switch has a "highwater mark"Includes frames already "in thebucket" as well as frames in flight.When threshold is reached,PAUSE frame is sent (IEEE802.1Qbb)Distance is proportional toreceiver capability
  • 13. 14© 2013 Cisco and/or its affiliates. All rights reserved.Presentation_ID Cisco PublicGo Long! No, Even Longer!Fibre Channel over IP (FCIP)Other alternatives include runningover lossy links-No buffer credits-No Priority Flow ControlUsually done over 1GbE linksAcceleration tools (like IOA) areavailableBest of both worlds:-Uses IP infrastructure and managementresources to connect and extend FC SANs-Keep high-performance SAN base; whilstincreasing data sharing between SANStransparently
  • 14. Visit Cisco Booth 401Twitter: @ciscoDCFacebook.com/CiscoDCVideo: http://www.youtubecisco.com/datacenterCisco blog: http://blogs.cisco.com/datacenterSlideshare: http://slideshare.com/CiscoDataCenterIn Collaboration with Intel®Intel and the Intel logo are trademarks of Intel Corporation in the U.S. and/or other countries.
  • 15. 16© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 16