passive and active copper cable technologies for high speed

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


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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?


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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


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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


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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


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%3DN


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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


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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


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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



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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


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Active Copper Interconnects for

10/40/100G Ethernet

John Mitchell

Intersil Corporation

San Jos, CA USAFebruary 2010 11


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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


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Power ContainmentPressure

Low Latency Needs

Green Initiatives

Additional Interconnect Trends


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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


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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


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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

passive and active copper cable technologies for high speed

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