Page 3 ... revision cycle. TIA T l i ti. • TIA - Telecommunication. Industry
Association. • ANSI/TIA-942 (2005). • Telecommunications ... p. TIA-942 for Data
Centers ...
TIA 942 (-A) Data Centers Greg Niemiera, RCDD Director Technical Support and Field Services Mohawk
Agenda • • • • • •
ANSI/TIA-942 Background Standards Restructuring Anticipated Changes Addendums ISO/IEC 24764 Influence I fl New Content
Background • ANSI - American National Standards Institute • Publishes TIA and IEEE • All TIA documents d t on a 5 year revision cycle
• TIA - Telecommunication T l i ti Industry Association • ANSI/TIA-942 (2005) • Telecommunications Infrastructure Standard for Data Centers
Restructuring of TIA Standards
• Revised document TIA-942-A • Restructured R t t d and d harmonized h i d 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 p TIA-942 for Data Centers
Restructuring of TIA Standards • 568-C contains: • C Component requirements intended primarily for vendors • Installed Permanent Link and Channel requirements for contractors/installers t t /i t ll • Change was to improve: • • •
Ease of use Efficiency Consistency between standards
Addendums Addendums are requirements added to a standard between revisions When the document is revised the addendums are incorporated Most standards have addendums associated with them For example Category 6A was issued as Addendum 10 to the 568 568-B B document, (568 (568B.2.10)
Open Architecture This standard specifies a generic t l telecommunications i ti cabling bli system t f th for the data center and related facilities whose primary function is information technology. technology ” page ix Purpose Mohawk’s Freedom of Choice program with ChannelMATE warranty supports the intent of this and other related TIA standards
TIA Standard Scheme
942-A 942 A Anticipated Changes • Reference: • • •
Generic Telecommunications topology Terms Environmental classifications per 568-C.O
• TIA-942 is a now premise p y for Data standard specifically Center environments
Organizational 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 p for: • Computer Rooms • Equipment Rooms
Organizational g Changes g Rack 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 include – – – –
Main M i Di Distribution t ib ti Area A (MDA) Intermediate Distribution Area (IDA) Horizontal Distribution Area (HDA) Optional Zone Distribution Area (ZDA)
• Contains 2nd level backbone distributor •
IC Intermediated Crossconnect
Topology p gy • Large facilities may contain multiple computer rooms • Each may y contain multiple p IDA’s acting as central point of administration • Allowance for reduced data center topology consolidates MDA and HAD into single MDA
942 Addenda • TIA 942-1 Coax Cabling g 2008 • Specifies requirements for 75-ohm ((734 and 735 DS3/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, T-1, T 3 E-1 E 1 and E-3 E3
942 Addenda • TIA 942-2 Data Centers 2009 • Improved Energy Efficiency: • Wider acceptable range temperature and humidity • Three tier lighting protocol
TIA-942 A Changes • Terminology such as: • EO equipment outlet • ENI external network interface
• 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 for both horizontal and backbone • Recognized connectors – LC for < two fibers – MPO’s > 2
Fiber Changes • Horizontal Fiber cabling distances applications dependent i.e. 568-C.0 • Harmonization H i ti TIA and d ISO • Liaison's between the standards bodies • Harmonization is ideal but not always achievable • ISO/IEC 24764 TIA-942 TIA 942 D. C. • ISO/IEC 11801 – TIA 568-C
• Connectors MM and SM – LC or MPO at • EO - Equipment Outlet • ENI – Equipment Network Interface (Xconnect at EF or TR)
• Fiber based channel length • • •
OF-300 / 300m OF-500 / 500m OF-2000 / 2000m
Major Copper Changes • Category 3 and 5e no longer recognized for horizontal • Minimum of Category g y6 • Category 6A recommended
ISO/IEC 24764 Influence • Balanced twisted pair 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 of energy, with the majority being converted to heat • Estimated that cooling is 30% of a data centers energy load • Cooling process itself is not efficient resulting i an oversupply in l off cold ld air i tto compensate t for f inefficiencies • Recent study y showed that the amount of cold air supplied is 2.6 times the amount actually consumed by the IT load 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) Blanking panels in open empty rack positions Hot-aisle or cold aisle containment systems Cabinets that minimize air bypass through the space between equipment rails and cabinet sides Fill/consoladate unused cabinet rack positions
Energy Efficiency • Utilize a cooling system that allows you to t regulate l t the th volume l off air i as needed • Equipment with non non-standard standard airflow may require specially designed enclosures to avoid air flow disruption • Cabling – Overhead improves cooling efficiency 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 monitor power levels to ensure enclosures don’t 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 Efficiency (DCiE) • Metric’s used to determine energy efficiency of a data center
Summary • Work is being done in TR-42.1 subcommittee • These are proposed changes being considered to TIA-942-A • Some of these may not make the final TIA 942-A 942 A document • There may possibly be other changes included that we have not reviewed • Optimistically p y 942-A p published late 2011
