Session 2; Cabling Technology in the Data Centre Media Choices; Copper Twisted Pair

Presentation;

Session 2;

Cabling Technology in the Data Centre

– Media Choices; Copper Twisted Pair

5

_{April 2010}

Paul Mathews

Media Types

• Physical Layer Cabling;

¾ Broken up ‘bits’ of information presented in binary ¾ 0101010101 0011001100

¾ Data is encapsulated into packets / frames / segments ¾ Sent onto WANs (data link layer cabling)

¾ Most popular LAN protocol is Ethernet

• Copper Twisted Pair;

¾ Electrical signals (voltage)

• Optical Fibre;

¾ Patterns, or waves, of light

• Coaxial;

¾ IEEE (LAN/WAN):

The Institute of Electrical and Electronics Engineers ¾ IETF (TCP/IP):

The Internet Engineering Task Force ¾ ITU (TCP/IP):

The International Telecommunication Union ¾ ISO:

The International Organisation for Standardisation ¾ ANSI:

The American National Standards Institute ¾ TIA/EIA:

The Telecommunications Industry Association / The Electronics Industry Alliance

Cabling Standards

Data Installation Standards

• BS 6701

– Telecommunications Equipment and cabling • EN 50173, ISO 11801, ANSI/TIA/EIA-568-B

– Generic IT Cabling For Customers Premises

• EN 50174

– IT Cabling Installation

• EN 50310

– Bonding & Earthing In Buildings with IT equipment • ISO/IEC TR 14763-2

– Information technology – Implementation and operation of customer premises – part 2: Planning and installation

Copper Cables

• Twisted-Pair Cabling;

¾ 4 Pair 100 Ohm balanced Category 5e, Cat 6 UTP

¾ Twisted-pairs to protect electrical performance/interference ¾ Solid conductor size recommended 24 AWG – 0.52mm (CCS) ¾ Cat 3 can be used for voice and low speed data transmissions

• Category 5e - 100 MHz / 100 Mbps

• Category 6 – 250 MHz / 1000 Mbps (Gigabit Ethernet)

• Category 6A – 500 MHz / 10,000 Mbps (10-Gigabit Ethernet)

• Connections;

¾ RJ45 Plugs (8P8C – 8-Pin 8-Connector) ¾ RJ45 Keystone

Shielded Cables

• FUTP - Overall foil screen with unshielded twisted pairs

• SFTP (or ScTP) – Foil screen twisted pairs individual

wrapping the copper conductors, with an overall braid shield

• High immunity to EMI • Ensures better bandwidth

• Systems must be bonded to ground

Interference

• External sources – interfere with signal path and impact transmission

performances

• EMI – transfer of energy from one device/equipment to another, operating

in the same environment. EMI represents EF emissions from PCs, radios, wireless equipment and cellular phones

• EMC – the ability for devices/equipment to operate properly within its

environment without being effected by EMI

• RF Interference (RFI) – degrades signals at receptor ends, disturbing

frequency transmissions. Technically part of EMI, but RFI relates to presence/absence of total amount of power and proximity to systems; • Broadcast communications (AM, FM, VHF)

• Non-relay communications (fax, telephone, radio control) • Mobile commuinications (bluetooth, cellular)

• Microwave ovens

Why Cat 6a Screened?

• Augmented Cat 6 is the latest international standard for cabling

• 500 MHz channel for each link (up to 100m) • Unscreened (UTP) cables are up to 30%

larger, diameter Vs FUTP/SFTP [fig 1]

• 40% filled pathways can cause crushing on UTP cabling systems, allowing deformation of cables • Minimum onsite testing for ANEXT required

(Alien Crosstalk between cables [fig 2])

• AXTalk testing on UTP adds an extra 3.5 – 4 hours for each 24 port panel link

• Cat 6A UTP cables cannot be mixed with Cat 6, 5e UTP cables due to AXTalk

ANEXT NEXT ANEXT ANEXT NEXT [fig 1] [fig 2]

CCS Net 10G Cat 6A Cable

• 550 MHz transmission

• Manufactured in the EU (Draka)

• 8.0mm outer diameter (Vs 9.0mm UTP competitors) • 23 AWG

• Compliant with EIA/TIA 568B, ISO/IEC 11801, IEC 611156-5 2nd _ed

EN 50173-1, EN 50288-10 • IEC Fire Rated

• Third party laboratory tested – DELTA verified for Channel Compliance • CCS 25 Year Warranty

CCS Net 10G Cat 7 Cable

• 900 MHz transmission

• Manufactured in the EU (Draka)

• 7.55mm outer diameter (there are no UTP Cat 7 cables) • 23 AWG

• Compliant with EIA/TIA 568B, ISO/IEC 11801, • EC 611156-5 2nd _{ed, EN 50173-1, EN 50288-10}

• IEC Fire Rated

• Third party laboratory tested

– DELTA verified for Channel Compliance • CCS 25 Year Warranty

CCS Net 10G Keystones

• Conforms to EIA/TIA 568-B2.10 Category 6A • Supports IEEE802.3an 10 Gigabit Ethernet • Third party laboratory tested

– ETL verified for Component Compliance • CCS 25 Year Warranty

• Shielded for excellent transmission performance (AXTalk, interferences)

CCS Net 10G Panels

• Unloaded for keystone connectivity

• 1u 24 Port – supplied with rear cable management panel • 1u 48 Port – high density

• CCS 25 Year Warranty

• Earthing point for equipment

CCS Net 10 RJ45 Patch Cords

• Double shield – SFTP

(Shielded for excellent transmission performance (AXTalk, interferences) • Superior twist rate for optimum bandwidth

• Individually tested to 10GBaseT standards and EIA/TIA-568-B2-10 • CCS 25 Year Warranty

CCS Net 6 Cat 6 UTP Cable

• 250 MHz transmission

• Manufactured in the EU (Draka) • 6.4mm outer diameter

• 24 AWG

• Compliant with EIA/TIA 568B • PVC of LSZH ratings

• Third party laboratory tested – DELTA verified for Channel Compliance • CCS 25 Year Warranty

CCS Net 6 Cat 6 UTP

Keystones

• Conforms to EIA/TIA 568-B2.1 Category 6 • Suitable for Gigabit Ethernet

• Third party laboratory tested

– ETL verified for Component Compliance • CCS 25 Year Warranty

CCS Net 6 Cat 6 Panels

• Unloaded for keystone connectivity

• 1u 24 Port – supplied with rear cable management panel • 1u 48 Port – high density

• CCS 25 Year Warranty

CCS Net 6 Cat 6 RJ45 Patch

Cords

• Superior twist rate for optimum bandwidth

• Individually tested to Gigabit Ethernet standards and EIA/TIA-568-B2-1 • CCS 25 Year Warranty

End of Session 2

5

_{April 2010}

Paul Mathews