Is FC Still Relevant? April 22, 2014Ben Woo, Managing Director
Sponsored by Emulex Corporation
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Audience Participation …
• What best describes your existing storage network today:o Only FCo Primarily FC (with some FCoE, IB, Ethernet, FCIP, etc.)o Primarily non-FC (with some FC)o Only non-FCo None of the above
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•Yes!
Is FC still relevant?
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The Right Technology for the Job
Ethernet may not be the best fit for storage
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Mature technology Well understood by storage
administrators Flexible network design De facto standard in most
datacenters High performance Low latency
Fibre Channel Benefits
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Comparison of storage networks
1, 2, 4, 8, 16, 32*
Gbps10, 40, 100*
Gbps1, 10, 40, 100*
Gbps10, 20, 40, 56, 100*
Gbps* Future
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• Scale-up databases• Dense virtualization
o Private Cloudo VDI
• Low latency/ultra-high performanceo SSD
• All data, structured or unstructured, end up on block storage
Performance = Advantage
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Emulex ExpressLane™
• Flash storage shares the SAN with traditional rotating media
• Mission-critical requests are stuck behind requests to slow storage
• Current queuing mechanisms are optimized for throughput, not latency
QoS SolutionSSD Latency Challenge
• ExpressLane creates separate queues for low latency storage-Identified by LUN
• Individual queues are coalesced for latency not overall bandwidth
• Queue associations are made from OneCommand Manager
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Emulex CrossLink™
• Flash requires coordination between nodes
• Current solutions (TCP/IP and UDP) suffer from “roundabout” stack-hopping
• Latency & QoS issues over Ethernet hamper coordination with storage devices
• Trust issues (storage networks deemed implicitly secure)
• Separate Ethernet connectivity requires additional wiring & management
SSD Coordination SolutionSSD Isolation
Challenge
• In-band FC Messaging solves latency & “stack-hopping” for cache or device coordination
• Uses standard & proven FC-CT protocol for FC and FCoE
• Simple interface- kernel or API
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Emulex & Brocade ClearLink (D_Port) Support
Emulex # 1 Gen 5 HBAs + Brocade #1 Gen 5 switches, Together Providing Superior SAN-wide Diagnostics
ClearLink is a rich SAN diagnostic mode fromBrocade Gen 5 FC switches (16GFC)
ClearLink is now supported by all 16G (only) Emulex LightPulse Gen 5 FC HBAs (XE201 based)
Identifies and isolates marginal link level failures and performance issues: SFP, port, & cable
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Neuraspective™
• Bringing all network traffic (WAN, MAN, LAN & SAN) can create new complexitieso Mismatch of packet typeso Client versus server package
• Need predictable, scalable storage network reliableo FC has proven to be reliable
• Protect existing investmento Most datacenters already run FCo Many enterprises have invested $M’s in FC
• ↑VM density = low latency, high IOPS, ultra-high bandwidth
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Before we finish …
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Ben [email protected] @BenWooNY @Neuralytix