TIA 942 (-A)TIA 942 (-A)Data Centers

Greg Niemiera, RCDDDirector Technical SupportDirector Technical Support

and Field ServicesMohawkMohawk

Agenda

• ANSI/TIA-942 Background• Standards Restructuring• Anticipated ChangesAnticipated Changes• Addendums

ISO/IEC 24764 I fl• ISO/IEC 24764 Influence• New Content

Background

• ANSI - American National Standards InstituteStandards Institute• Publishes TIA and IEEE

All TIA d t 5• All TIA documents on a 5 year revision cycle

TIA T l i ti• TIA - Telecommunication Industry Association

• ANSI/TIA-942 (2005)• Telecommunications Infrastructure

Standard for Data Centers

Restructuring of TIA StandardsStandards

• Revised document TIA-942-AR t t d d h i d• Restructured and harmonized with current TIA-568-C

• Common information applying to multiple types of premise applications is in a common standard i.e. 568-C.0

• Information for specific premises are in standards like pTIA-942 for Data Centers

Restructuring of TIA StandardsStandards

• 568-C contains:C• Component requirements intended primarily for vendors

• Installed Permanent Link and Channel requirements for

t t /i t llcontractors/installers• Change was to improve:

• Ease of use• Efficiency• Consistency between standards

Addendums

Addendums are requirements added to a standard between revisionsstandard between revisions

When the document is revised the addendums are incorporatedaddendums are incorporated

Most standards have addendums associated with themwith them

For example Category 6A was issued as Addendum 10 to the 568-B document, (568-Addendum 10 to the 568 B document, (568B.2.10)

Open Architecture

This standard specifies a generic t l i ti bli t f thtelecommunications cabling system for the data center and related facilities whose primary function is information technology ”primary function is information technology. page ix PurposeMohawk’s Freedom of Choice program withMohawk’s Freedom of Choice program with ChannelMATE warranty supports the intent of this and other related TIA standardsof this and other related TIA standards

TIA Standard Scheme

942-A Anticipated Changes942 A Anticipated Changes• Reference:

• Generic Telecommunications topology

• Terms• Terms• Environmental classifications per

568-C.O

• TIA-942 is a now premise standard specifically for Data p yCenter environments

Organizational ChangesOrganizational Changes

• Content for Bonding and Grounding will be moved to 607 (currently draft B)

• Content regarding Labeling will be moved to 606-A Addendum 1 (revised 2008)– Covers specifics for:p

• Computer Rooms • Equipment Rooms

Organizational Changesg g

Rack and Cabinets content willRack and Cabinets content will move to TIA-569 as these are generic to all premises

Power and Telecommunications cabling separation in TIA-569

Outside Plant to draft TIA-758 OSP Standard

Expanded Topology

• Large Data Centers includeM i Di t ib ti A (MDA)– Main Distribution Area (MDA)

– Intermediate Distribution Area (IDA)– Horizontal Distribution Area (HDA)Horizontal Distribution Area (HDA)– Optional Zone Distribution Area

(ZDA)

• Contains 2nd level backbone distributorbackbone distributor

• IC Intermediated Crossconnect

Topologyp gy

• Large facilities may contain multiple computer rooms

• Each may contain multiple y pIDA’s acting as central point of administration

• Allowance for reduced data center topology consolidatescenter topology consolidates MDA and HAD into single MDA

942 Addenda942 Addenda

• TIA 942-1 Coax Cabling 2008g• Specifies requirements for

75-ohm (734 and 735 DS-(3/DS-4 type) coaxial cabling

• Additional requirements:q• Coax connector components

for T-3, E-1 and E-3• Longer distances from MDA• Revised distance guidelines for

T 1 T 3 E 1 and E 3T-1, T-3, E-1 and E-3

942 Addenda942 Addenda• TIA 942-2 Data Centers 2009• Improved Energy Efficiency:

• Wider acceptable rangeWider acceptable range temperature and humidity

• Three tier lighting protocolThree tier lighting protocol• Category 6A recommended

G idance regarding RFI• Guidance regarding RFI• Updated Tiers

TIA-942 A Changes

• Terminology such as:• EO equipment outlet• ENI external networkENI external network

interface • Maximum Horizontal length• Maximum Horizontal length

• Copper maximum 100m

Major Fiber Changes

• Elimination of 100 m length limitation on fiber; distance to be based on application

• 62.5µm OM1 & OM2 not recognized• 50µm OM3 and OM4 recognized for50µm OM3 and OM4 recognized for

both horizontal and backbone• Recognized connectors• Recognized connectors

– LC for < two fibersMPO’s > 2– MPO’s > 2

Fiber Changes

• Horizontal Fiber cabling distances applicationsdistances applications dependent i.e. 568-C.0H i ti TIA d ISO• Harmonization TIA and ISO

• Liaison's between the standards bodies

• Harmonization is ideal but not always achievable

• ISO/IEC 24764 TIA-942 D. C.ISO/IEC 24764 TIA 942 D. C.• ISO/IEC 11801 – TIA 568-C

ISO/IEC 24764 Influence

• FiberSpecifies minimum OM3– Specifies minimum OM3

– 50/125 micron– 850 nm Laser Optimizedp

• Connectors MM and SM– LC or MPO at

• EO - Equipment Outlet• ENI – Equipment Network Interface (X-

connect at EF or TR)connect at EF or TR)

• Fiber based channel length• OF-300 / 300m• OF-500 / 500m• OF-2000 / 2000m

Major Copper ChangesMajor Copper Changes

• Category 3 and 5e no longer recognized for horizontal

• Minimum of Category 6g y• Category 6A recommended

ISO/IEC 24764 Influence

• Balanced twisted pairBalanced twisted pair cabling

• Specifies Class EA Cabling• Specifies Class EA Cabling• Category 6A• Exception network access

• 942-A will recommend 6A

942-A New Section Content• Energy efficiency Section• Data Centers consume large amounts ofData Centers consume large amounts of

energy, with the majority being converted to heat

• Estimated that cooling is 30% of a data centers• Estimated that cooling is 30% of a data centers energy load

• Cooling process itself is not efficient resulting i l f ld i t t fin an oversupply of cold air to compensate for inefficiencies

• Recent study showed that the amount of cold yair supplied is 2.6 times the amount actually consumed by the IT load

• Even though rooms are oversupplied (2.6) ~10%Even though rooms are oversupplied (2.6) 10% of enclosures exceed ASHRE limits

Cooling Efficiencies• Cabinets with isolated air-supply or

isolated air-return• Cabinets with in-cabinet cooling systems• Cable openings utilizing grommets or

brushes in the enclosure (system)brushes in the enclosure (system)• Blanking panels in open empty rack

positions• Hot-aisle or cold aisle containment

systems• Cabinets that minimize air bypass throughCabinets that minimize air bypass through

the space between equipment rails and cabinet sides

• Fill/consoladate unused cabinet rack• Fill/consoladate unused cabinet rack positions

Energy Efficiency

• Utilize a cooling system that allows t l t th l f iyou to regulate the volume of air as

needed• Equipment with non standard airflow• Equipment with non-standard airflow

may require specially designed enclosures to avoid air flow disruptionenclosures to avoid air flow disruption

• Cabling – Overhead improves cooling efficiency and is a best practiceefficiency and is a best practice where practical verses under floor• Top of rack switching architectures

Energy Efficiency

• Simple Network Management Protocol (SNMP) Power strips to measure and(SNMP) Power strips to measure and monitor power levels to ensure enclosures don’t exceeded power andenclosures don t exceeded power and required cooling levels• These SNMP software tools provide the

ability analyze power cooling metrics such as Power Usage Effectiveness (PUE) and Data Center infrastructure Efficiencyand Data Center infrastructure Efficiency (DCiE)

• Metric’s used to determine energy efficiency of a data center

SummarySummary• Work is being done in TR-42.1

subcommitteesubcommittee• These are proposed changes

being considered to TIA-942-Abeing considered to TIA-942-A• Some of these may not make

the final TIA 942-A documentthe final TIA 942 A document • There may possibly be other

changes included that we havechanges included that we have not reviewed

• Optimistically 942-A published p y plate 2011