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8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Passive and Active CopperCable Technologies for HighSpeed Ethernet Applications
Reducing CapEx, OpEx and CarbonFootprints
Russell Hornung
W. L. Gore & Associates, Inc.
John MitchellIntersil Corporation
San Jos, CA USAFebruary 2010
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
2/21
2
Copper Twinax Connectivity inData Centers
Simple, economical interconnect within racksand between adjacent racks
Plug and play with optics using sameconnectors
Improved signal integrity compared tostructured cabling
Logarithmic Decrease in Latency vs. OpticalTransceivers or 10GBase-T
Why Copper Twinax?
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Less Power
Consumption &Lower Cooling
Costs
Higher Quality& Reliability
Lower Capital Cost
Advantages of Both Active andPassive Copper Cables for 10/40/100GbE Ethernet Applications
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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SFP+, QSFP and CXP are CurrentForm Factors capable of 10 GbpsSpeeds per Lane
With Both Active andPassive Copper Solutions
1x
4x
12x
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Premises important to EthernetIndustry
Power Consumptionof TremendousImportance
Cooling is Paramount Need for Reliability &
Quality in ElevatedTemp Environments
Both CapEx andOpEx costs are critical
Industry needs Low Cost, Low Energy, Low Risk,
Dependable and Effective Interconnects
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Data Centers consumed 65 Billion KW-hrs., or$28 Billion of energy. WorldwideConsumption was 160 Billion KW-hrs. or $80Billion (USA EPA)
Power and Cooling are HOT Topics
San Jos, CA USAFebruary 2010
Economic Recovery Funds have been Earmarked forGovernment Labs For Replacement of Relatively NewEquipment with Lower Power Alternatives
Overheating downs U of Penn Data Centerby Nadine Zylberberg | Tuesday, January 19, 2010 at 9:30 pm
shut-down of the Universitys financial, research andstudent online services
http://thedp.com/author/nadine-zylberberghttp://thedp.com/author/nadine-zylberberghttp://images.google.com/imgres?imgurl=http://blogs.venturacountystar.com/vcs/motorhead/epa.jpg&imgrefurl=http://blogs.venturacountystar.com/vcs/motorhead/2008/08/&h=300&w=300&sz=21&hl=en&start=1&sig2=U6GxKJhOZzWJrSOJia4GOQ&um=1&usg=__CezBpbhqjr2FHbHfT_eiyGrt-4Q=&tbnid=CEEpYf-4-jYlrM:&tbnh=116&tbnw=116&ei=208TSbiZDJu0sAPC0bX2Bg&prev=/images%3Fq%3DEPA%26um%3D1%26hl%3Den%26rlz%3D1T4GGIH_enUS277US277%26sa%3DN8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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In 2007 data centersconsumed astaggering 1.8% ofthe U.S.'s entire
supply of electricity Excess of the entire
consumption of LosAngeles or theBaltimore-
Washington Corridor. Data Centers
responsible for CO2emissions that isHalf that of the
Airline Industry!
Financial Times , Garter Report
GREEN Computing and theNeed to Reduce Power
Market demanding lower power interconnects
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Faster Ethernet Continues to DriveTechnical Advancements to ExtendUseful Length of Copper
Extended Cable Bandwidth forHarmonic Coverage and LowerAttenuation at the Harmonic
Improvements in Connector
Performance
Better Recepticle Performanceon the System Interface
Less Common Mode Conversion
Low Crosstalk and ControlledImpedance through the WholeLink
Lower Loss, GreaterBandwidth,Greater Coupling
GreaterConsistency
Channel-Channel
Lower Loss, Impedance Control,Less Common Mode Conversion
Your only as good as your worst pair
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Cable Length Distributionin Large Computing Cluster
Cable Length Distribution in Large Computing Cluster
0%
5%
10%
15%
20%
25%
30%
35%
40%
Up to 5m 5 to 10m 10 to 15m 15 to 20m Above 20m
90% 15 meters or less60% 10 meters or less
San Jos, CA USAFebruary 2010
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Shorter Lengths Passive Coppermax at 7 to 10 meters; mostvendors limited to about 5 meters
Short (provides opportunity to usesmaller O.D. and more flexible cable)
and Medium Length ActiveCopper (covered in more detail inupcoming slides)
Optics at a Cost and PowerPremium for Short and Medium
Lengths
Modules are Typically LessFlexible due to proprietary nature
Longer Lengths Optic Modules
Current 10/40/100 GbE Choices
0 5 10 15 20 25 30 35 40+
Passive Copper Assembly
Fibre Optic Module
Length in Meters
Active Copper Assembly
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Active Copper Interconnects for
10/40/100G Ethernet
John Mitchell
Intersil Corporation
San Jos, CA USAFebruary 2010 11
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Performance increases 10Xevery 3.5yrs
Clusters have becomedominant architecture
Increasing adoption of HPCby business and industry
Key HPC Trends
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Bandwidth required from the Interconnect needs toscale at same 10X/3.5yrs
Greater number of Interconnects brings more
importance to thinner and lighter cables As HPC moves mainstream, there is increased
emphasis on reliability and cost.
Key Interconnect Trends
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Power ContainmentPressure
Low Latency Needs
Green Initiatives
Additional Interconnect Trends
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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Rate(Gb/s)
Base-T Copper ActiveCopper
Optics
10
40
100(10x10)
100(4x25)
Interconnect Options
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Active Copper Interconnects
Ultra Long Reach and Ultra Thin CopperInterconnects offer Greater flexibility
Low Power meets Data Center Green Requirements
Low Latency meets Data Access and TransactionNeeds
Cost Effective alternative to Optics
San Jos, CA USA
February 2010 16
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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10G Active Copper Interconnects
San Jos, CA USA
February 2010 17
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AmplitudeEqualization
Group DelayEqualization
CrosstalkReduction
SkewCorrection
Skew
Addresses Loss,Dispersion , Skew andNoise in High SpeedInterconnects
San Jos, CA USA
February 2010 18
Active Copper Interconnect Technology
8/6/2019 Passive and Active Copper Cable Technologies for High Speed
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CAT 5E Gigabit EthernetToo SlowCAT 6a/7 10GBASE=THigher PowerHigher Latency
Active CopperMeets all Needs
Thinnest HS Interconnect
MMF SR OPTICSHigher CostHigher Power
San Jos, CA USA
February 2010 19
10G Options
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Passive vs. Active Copper
ReduceCross-Section 6X
Reduce
Weight 10X
ReduceCost
Reduce
Waste
Cross-Sections of 48 Port Interconnect(24AWG Passive Left and 32AWG Active Right)
San Jos, CA USA
February 2010 20
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Active Copper Features and Benefits
Advanced Analog Signal Processing overcomes loss and noise distortiontypical in long copper cables.
CMOS technology enables low power.
Reliable and Cost-Effective alternative to Optics up to 20m
Cables are Compliant to SFF requirements
SFP+
San Jos, CA USA
February 2010 21
QSFP+ CXP