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 PurposeMohawks Freedom of Choice program withMohawks 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 pIDAs 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

62.5m OM1 & OM2 not recognized 50m OM3 and OM4 recognized for50m OM3 and OM4 recognized for

both horizontal and backbone Recognized connectors Recognized connectors

LC for < two fibersMPOs > 2 MPOs > 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 dont 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)

Metrics 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