Athens Datacentres And 10 G
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1) 10GBASE-T technologies are emerging that provide 10 gigabit Ethernet speeds over copper cabling, but they are susceptible to interference from crosstalk and electromagnetic noise. 2) Screened cabling is recommended to support 10GBASE-T up to its full channel length due to its superior protection against crosstalk and ability to operate in noisier environments. 3) Standards committees and cable manufacturers recognize various cabling classes, including Cat6, Cat6a, and Cat7, as supporting 10GBASE-T, with screened cables having greater maximum supported distances.
Athens Datacentres And 10 G
- 1. 10GBASE-T &Data Centre solutionsK G HodgeR&D ManagerBrand-RexNovember 2009
- 2. 2010 - the year of 10Gbps technologies9/3/2009Brand-Rex Copyright 20092Dell’Oro Group – “copper-based 10GigE adapter port shipments are expected to grow from 33K in 2008 to 1.5M in 2013”
- 3. Intel - “10GbE connectivity is on a growth path driven by the needs for higher perfromance and supported by falling per-port prices”
- 4. Cisco – “the adoption of Data Center Ethernet will help enable a unified fabric in the data centre, reducing costs and simplifying management”Cabling for 10GbE technolgiesNote 1: Standards advise that UTP cabling reaches 37m without mitigation for ANEXT and that screened cabling reaches full channel length9/3/2009Brand-Rex Copyright 2009
- 5. The latest emerging application - 10GBASE-T10,000,000,000 bps
- 6. 10GBASE-T TransmissionEMI10GBASE-T signal spectrum up to 500 MHznearbyUTPcableAlienXT(AXT)Active EquipActive Equip 2.5 Gbit/sDigitalSignalProcessor(DSP)DigitalSignalProcessor(DSP) 2.5 Gbit/s10 Gbit/s 10 Gbit/s 2.5 Gbit/s 2.5 Gbit/sNEXTFEXTReturn LossExternal noise & complex signal - BER 10-12
- 7. 10GBASE-T channel - June 2006Signal attenuationAlien CrosstalkSignal = Noise @ 500MHz
- 8. Alien XT – UTP10GPLUS AC6 UTP cabling90m link- Cables ‘6 round 1’ Fluke DTX1800 with Alien XT adaptorsSignificant links - all7dB margin
- 9. Alien XT – Screened10GPLUS AC6 screened cablingFluke DTX1800 & Alien XT adaptorsSignificant links- Adjacent links only30dB+ margin
- 10. A Practical Alien Crosstalk Test Strategy:* Assured by Brand-Rex Laboratory testing Test Method - draft IEC 61935 ed 3 & draft IEC 14763-215 minimum or 3% of the links
- 11. E.g. 10,000 links = 300 test points10GBASE-T - reachIEEE802.3an:2006 advises :ClassE UTP supports up to 55m, Class E screened supports up to 100mClass EA screened or UTP supports up to 100mISO/IEC 11801:2002 Amm1 advises :ClassEA supports 100mISO/IEC TR 24750 states that :Class E UTP channels should support 10G up to 55m and >55m with mitigation. Class E screened should support 100mTIA/EIA TSB155 states :Cat6 operates up to 37m, should operate up to 55m depending on AXT environment, >55m requires AXT mitigationANSI/TIA/EIA 568B.2-10 advises :Cat6a supports 100m
- 12. 10GBASE-T devicesSMCCat5 UTP 45m 2 connCat6 UTP 55m 2 connCat6a UTP 100m 4 connCat7STP 100m 4 connIntel/DellCat6 55mCat6a 100mCat7 100m
- 13. Copper Links10GBASE-T devices are on the market14-15WDevice manufacturers recognise Cat5, 6, 6A and 7 cablingStandards committees recognise Cat6, 6A and 7 cabling to run 10GBASE-T10GBASE-T is limited by signal attenuation and the noise from adjacent cables.10GBASE-T technology is susceptible to EMI9/3/2009Brand-Rex Copyright 200912
- 14. 10GBASE-T Alien Crosstalk testsBrand-Rex LabsJune 2009
- 15. Cabling Under TestNVNNNNNCabling ‘Worst’ case condition‘6 round 1’ cables in full length channelsNormal terminationMultiple connector links
- 17. 42Cabling, UTP & screenedCat6A Cat6Cat5eSwitches1000BASE-T100BASE-T10BASE-TNICs10GBASE-T
- 18. Expected reach per cable type: F = patchcable IL factor , X = patch length, C= CP cable IL factor, Y = CP length
- 19. VNVNNNNNCable type97m0mReachCat6A screenedSingle channel+ noise on adjacent cablesSingle channelCat6A UTP+ noise on adjacent cablesCat6 screenedSingle channel+ noise on adjacent cablesCat6 UTPSingle channel – 95m14m14m95m55mReach with 10GBASE-T technology
- 20. EMC assessment
- 21. EN50174-2EMC environments:Transmitters (TV, radio, base stations) <1km E3Flourescent lights <0.5m E2Flourescent lights >0.5m E1Thermostatic switches >0.5m E1WHO: 10V/m under power linesSource: Richard Box
- 22. MICE levelsBS EN 50173-1:2007 Annex GElectromagnetic criteriaESD 4kV & 8kV (air) Radiated RF 3V/m - 10V/mConducted RF 3V - 10VEFT 500V - 1kVSurge 500V - 2kVMagnetic field 1A/m - 30A/m
- 23. Radiated Emmission - E field30MHz to 1000MHz EN55022: 1998 & A1 & A2
- 24. Radiated Emmission - E field
- 25. Conducted RF Immunity150KHz to 80MHz EN 61000-4-6: 1996 & A1
- 26. Electrical Fast TransientsEN 61000-4-4Noise applied to the signal cable15ms bursts at 5khzVoltage levels applied:0.5kV (E1)1kV (E2 & E3)2kV10GbE on all cabling types:No effect noted
- 27. EMC summary
- 28. EMCEmmission requirements - 10GBASE-T devices with UTP and screened cabling passed the requirements of the EMCDImmunity requirements - screened cabling is required to assure that the 10GBASE-T devices tested can operate in the general office environment. MICE level E1.
- 29. Environmental Noise SurveyRural AreasCity CentresTown CentresGeneral OfficesData CentresPortable Spectrum AnalyserActive Receive antennaOpen Area Test Site
- 30. Worst measured EM noiseE1
- 31. Can EMI interfere with 10GBASE-T on UTP?Received signal powerNoise > signal at high freq.Worst case noise (EMI) coupled onto UTP cables
- 32. 10GBASE-T 10GBASE-T devices are on the marketAlien noiseClassEA screened and UTP cabling support full channel lengthsClass E screened cabling supports full channel lengthsEMC (cabling is exempt from the EMCD)Screened cabling - 10GBASE-T operated in MICE level E1 environmentsUTP cabling - 10GBASE-T is disturbed by the maximum E1 level (3V/m)In electro-magnetically noisy environments screened cabling supports 10GBASE-T
- 33. Standardisation – Data Centre cablingANSI/EIA/TIA 942 Cat6 & OM2Rev 1 (draft) Cat6A & OM3CENELEC EN 50173-5 Class E & OM3Ammendment 1 (draft) Class EA & OM3ISO/IEC 24764 (draft) Class EA & OM39/3/2009Brand-Rex Copyright 200932
- 34. Standardisation - TIATIA 942Telecommunications Infrastructure Standard for Data CentresSpecifies the minimum requirements for the telecommunications infrastructure of data centres and computer rooms.Introduces telecommunications design issues early into the construction cycleEnables the long term planning of the data centre to accommodate change and growth and support future applications
- 35. Standardisation - TIA‘Should’ and ‘Shall’Shall:be located away from sources of electro-magnetic interferencebe sized to meet the requirements of the equipment, including clearances…..and future needsMinimum room height 2.6mMinimum clearance from sprinklers 460mmFloors, walls & ceilings light coloured & sealed against dustAntistatic floorsMinimum 500 lux lightingCabinets have a min width of 1m and door heigth of 1.3mMin distributed floor loading capacity 7.2kPaProvide continous 24/365 HVAC 20 to 25degC, 40 to 55%RH, 21degC max dew point, max temp change 5degC/hrRacks & Cabinets arranged in ‘hot’ and ‘cold’ islesMonitor Temperature in the cold islesEtc., etc …………..
- 36. Standardisation - TIATiering – Generic CablingRef: TIA 942
- 37. Product Solution Sets* PoE onlyBrand-Rex Copyright 2009
- 38. The High Speed EnvironmentSource: Cambridge OnlineSource: Anon
- 39. 1/2UMDC cablesnewFibre X connectMT ConnectZonecablesCu X connectIIMSBlolite10GPLUSFibrePLUSSmartpatchCat6PLUSCabling Solutions
- 40. Cu X-connect solutionsCross-connect solutions‘V12’ Angled Technology PanelsSecure, High Density, Cu Cabling CabinetUp to 864 ports per cabinet
- 41. Vertical management, pathways and space for 432 patchcords
- 43. Stand alone
- 45. Back to Back
- 46. 900x1000mm
- 47. Side to Side864 Cu ports per cabinet
- 49. Effects of cabling on cooling air flow rates through tilesSmall DC modelBasics:1000sq ft2ft high plenum space3kw server racks10,000CFM CRACs 25% aperture tiles 100 cables per rack Simulation outputs include:Rack & room temperatures Press. and vol. flow above & below the floorFlow rates & estimated cooling capacity per tile
- 50. 10% improvement in cooling air flow rates through tilesSimulation air flow ratesNo data cables underfloor382 to 431 CFM5.5mm OD cables on trays381 to 437 CFM5.5mm OD cables on the floor380 to 436 CFM7.2mm OD cables on trays391 to 424 CFM8.5mm OD cables on trays361 to 392 CFM
- 51. Zone CableReduced space taken in pathways
- 52. AC6 UTP 8.3mm 50 links
- 53. AC6 DCZ 5.4mm 118 links
- 54. Reduced weight in trays
- 55. AC6 UTP 79 kg/km
- 56. AC6 DCZ 33 kg/km
- 58. Xconn – LDP – EO 77 mUTP8.3FFTP7.2Zone5.4Space saving ‘Zone’ cabling
- 59. ½ U height panelsFeatures: Category 6 performance½ U height 24 port panelsBenefits: to the installer:logical and quick installationStandard termination methodsto the end user:Reduces height in rackReduces depth in rackReduces blockage of exhaust air
- 60. Fibre Optic CablesMicro Distribution Cables (12f & 24f)Dual Loose Tube (24f)Multi-Loose tube (48f)
- 61. Modular FO system - MT ConnectMT ConnectPro’sModularityFaster installationQuicker repair timeShorter maintenance timeLess downtimeMT ferrule based12 or 24fCon’sHigher initial costMT ferrule based0.36dB (LED launch)12 or 24f
- 62. Optimised solution for main distributor locations
- 63. Small footprint
- 64. 500x900mm
- 65. 1824 ports per cabinet
- 66. 3648 ports in 1m x 900mm
- 67. Cable Management
- 71. Front of rack working
- 72. Logical routingHigh Density FO cross-connects
- 73. Data centre – FO solution Installation
- 74. 6 cabinets = 6x1824 fibre ports or 6x864 Cu ports or a mix
- 75. Higher Speed, Future Proof, Cabling NetworksDemand for 10Gbps speeds is increasing Data Centres, HPC & Corporate Backbones10GbE technologies are established in the market10GBASE-T devices are now availableSelection of the right infrastructure solution to run, or future proof for, higher speeds is criticalUp to 100m - Class EA cablingIn building - OM3 or OM4Between buildings - SMF1Gbps -> 10Gbps-> 40Gbps-> 100Gbps-> 400Gbps -> TeraBit?
- 76. Thankyou for listeningQuestions ?9/3/2009Brand-Rex Copyright 200951