6. 10GBASE-T Transmission EMI 10GBASE-T signal spectrum up to 500 MHz nearby UTP cable AlienXT (AXT) Active Equip Active Equip 2.5 Gbit/s Digital Signal Processor (DSP) Digital Signal Processor (DSP) 2.5 Gbit/s 10 Gbit/s 10 Gbit/s 2.5 Gbit/s 2.5 Gbit/s NEXT FEXT Return Loss External noise & complex signal - BER 10-12
7. 10GBASE-T channel - June 2006 Signal attenuation Alien Crosstalk Signal = Noise @ 500MHz
12. 10GBASE-T devices SMC Cat5 UTP 45m 2 conn Cat6 UTP 55m 2 conn Cat6a UTP 100m 4 conn Cat7STP 100m 4 conn Intel/Dell Cat6 55m Cat6a 100m Cat7 100m
13. Copper Links 10GBASE-T devices are on the market 14-15W Device manufacturers recognise Cat5, 6, 6A and 7 cabling Standards committees recognise Cat6, 6A and 7 cabling to run 10GBASE-T 10GBASE-T is limited by signal attenuation and the noise from adjacent cables. 10GBASE-T technology is susceptible to EMI 9/3/2009 Brand-Rex Copyright 2009 12
15. Cabling Under Test N V N N N N N Cabling ‘Worst’ case condition ‘6 round 1’ cables in full length channels Normal termination Multiple connector links
18. Expected reach per cable type : F = patchcable IL factor , X = patch length, C= CP cable IL factor, Y = CP length
19. V N V N N N N N Cable type 97m 0m Reach Cat6A screened Single channel + noise on adjacent cables Single channel Cat6A UTP + noise on adjacent cables Cat6 screened Single channel + noise on adjacent cables Cat6 UTP Single channel – 95m 14m 14m 95m 55m Reach with 10GBASE-T technology
26. Electrical Fast Transients EN 61000-4-4 Noise applied to the signal cable 15ms bursts at 5khz Voltage levels applied: 0.5kV (E1) 1kV (E2 & E3) 2kV 10GbE on all cabling types: No effect noted
28. EMC Emmission requirements - 10GBASE-T devices with UTP and screened cabling passed the requirements of the EMCD Immunity 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 Survey Rural Areas City Centres Town Centres General Offices Data Centres Portable Spectrum Analyser Active Receive antenna Open Area Test Site
31. Can EMI interfere with 10GBASE-T on UTP? Received signal power Noise > signal at high freq. Worst case noise (EMI) coupled onto UTP cables
32. 10GBASE-T 10GBASE-T devices are on the market Alien noise ClassEA screened and UTP cabling support full channel lengths Class E screened cabling supports full channel lengths EMC (cabling is exempt from the EMCD) Screened cabling - 10GBASE-T operated in MICE level E1 environments UTP 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 cabling ANSI/EIA/TIA 942 Cat6 & OM2 Rev 1 (draft) Cat6A & OM3 CENELEC EN 50173-5 Class E & OM3 Ammendment 1 (draft) Class EA & OM3 ISO/IEC 24764 (draft) Class EA & OM3 9/3/2009 Brand-Rex Copyright 2009 32
34. Standardisation - TIA TIA 942Telecommunications Infrastructure Standard for Data Centres Specifies the minimum requirements for the telecommunications infrastructure of data centres and computer rooms. Introduces telecommunications design issues early into the construction cycle Enables 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 interference be sized to meet the requirements of the equipment, including clearances…..and future needs Minimum room height 2.6m Minimum clearance from sprinklers 460mm Floors, walls & ceilings light coloured & sealed against dust Antistatic floors Minimum 500 lux lighting Cabinets have a min width of 1m and door heigth of 1.3m Min distributed floor loading capacity 7.2kPa Provide continous 24/365 HVAC 20 to 25degC, 40 to 55%RH, 21degC max dew point, max temp change 5degC/hr Racks & Cabinets arranged in ‘hot’ and ‘cold’ isles Monitor Temperature in the cold isles Etc., etc …………..
49. Effects of cabling on cooling air flow rates through tiles Small DC model Basics: 1000sq ft 2ft high plenum space 3kw server racks 10,000CFM CRACs 25% aperture tiles 100 cables per rack Simulation outputs include: Rack & room temperatures Press. and vol. flow above & below the floor Flow rates & estimated cooling capacity per tile
50. 10% improvement in cooling air flow rates through tiles Simulation air flow rates No data cables underfloor 382 to 431 CFM 5.5mm OD cables on trays 381 to 437 CFM 5.5mm OD cables on the floor 380 to 436 CFM 7.2mm OD cables on trays 391 to 424 CFM 8.5mm OD cables on trays 361 to 392 CFM
58. Xconn – LDP – EO 77 mUTP 8.3 FFTP 7.2 Zone 5.4 Space saving ‘Zone’ cabling
59. ½ U height panels Features: Category 6 performance ½ U height 24 port panels Benefits: to the installer: logical and quick installation Standard termination methods to the end user: Reduces height in rack Reduces depth in rack Reduces blockage of exhaust air
61. Modular FO system - MT Connect MT Connect Pro’s Modularity Faster installation Quicker repair time Shorter maintenance time Less downtime MT ferrule based 12 or 24f Con’s Higher initial cost MT ferrule based 0.36dB (LED launch) 12 or 24f
74. 6 cabinets = 6x1824 fibre ports or 6x864 Cu ports or a mix
75. Higher Speed, Future Proof, Cabling Networks Demand for 10Gbps speeds is increasing Data Centres, HPC & Corporate Backbones 10GbE technologies are established in the market 10GBASE-T devices are now available Selection of the right infrastructure solution to run, or future proof for, higher speeds is critical Up to 100m - Class EA cabling In building - OM3 or OM4 Between buildings - SMF 1Gbps -> 10Gbps-> 40Gbps-> 100Gbps-> 400Gbps -> TeraBit?
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