KEEPING TO CODE
comparison between
US & China standards
Jeffrey Lam RCDD
Data Center Standards
Comparison between
EIA/TIA 942 & GB 50174 -2008
ANSI / TIA 942
Telecommunications Infrastructure Standard for Data Centers
Published by Telecommunications Industry Association
Recognised by American National Standards Institue
Published in 2005
GB 50174 (2008)
Code for Design of Electronic Information System Room
Published by China Electronics Engineering Design Institute
Designated as Guo Biao ( 国标) or National Standards
Published in 2008
US vs China “National” standards
ANSI / TIA 942A
Tiering system
• Tier 1 Basic Data Center
• Tier 2 Redundant Components
• Tier 3 Concurrently maintainable
• Tier 4 Fault tolerant
GB 50174 (2008)
Class system
• C Basic model
• B Redundant
• A Fault-tolerant-type
Classification of DC for comparison
Where items are not explicably allowed / restricted, the following
terms are used in the standards
ANSI / TIA 942A

Not recommended

No requirement

No restriction

Not applicable

Minimum code requirements
Classification of DC for comparison
GB 50174 (2008)
可 - permissable/ optional
应 - should be used
宜 - advisable
Comparison - Locations
TIA
TIER
Proximity to airports
GB
CLASS
TIER 1
not applicable GB Class C
TIER 2
TIER 3 Not less than 1.6 km. GB Class B
TIER 4 Not less than 8 km GB Class A
       
TIA
TIER
Proximity to major traffic arteries
GB
CLASS
TIER 1
not applicable GB Class C
TIER 2
TIER 3 Not less than 91 m
Not less than
100 m
GB Class B
TIER 4 Not less than 800 m GB Class A
Comparison - Locations
TIA
TIER
Proximity to flood hazard area as mapped on a
federal Flood Hazard Boundary or Flood
Insurance Rate Map
GB
CLASS
TIER 1 No requirement
Not advisable to
located
Class C
TIER 2 not within flood hazard area
Should not be
located
Class B
TIER 3
Not within 100-year flood hazard
area or less than 91 m / 100 yards
from 50-year flood hazard area Class A
TIER 4
Not less the 91 m from 100-year flood
hazard area
Comparison - Power
ANSI/TIA
TIERS
Utility Entrance
GB
CLASSES
TIER 1
Single Feed Class C
TIER 2
TIER 3 Dual feeds
Dual feeds from
different sources.
Class B
TIER 4
Dual feeds from diff.
substations 
Class A
Comparison - Genset
TIA
TIERS
Back-up diesel generator system
GB
CLASSES
  not mentioned Class C
TIER 1 8 hrs  
TIER 2 24 hrs Class B
TIER 3 72 hrs Class A
TIER 4 96 hrs  
Comparison – UPS
ANSI/TI
A
TIERS
UPS Redundancy
GB
CLASSE
S
TIER 1
N Class C
TIER 2
TIER 3 N+1    
   
N+X
Class B
TIER 4 2N    
    2N or M(N+1) Class A
Comparison – CRAC/CRAH
ANSI/TIA
TIERS
CRAC / CRAH
GB
CLASSES
TIER 1 No redundant Unit N Class C
TIER 2
1 redundant Unit per critical
area
N+1 Class B
TIER 3 Redundancy to maintain
continunity during loss of one
source of power
   
TIER 4 N+X Class A

Comparison USA/China datacenters standards

  • 1.
    KEEPING TO CODE comparisonbetween US & China standards Jeffrey Lam RCDD
  • 2.
    Data Center Standards Comparisonbetween EIA/TIA 942 & GB 50174 -2008
  • 3.
    ANSI / TIA942 Telecommunications Infrastructure Standard for Data Centers Published by Telecommunications Industry Association Recognised by American National Standards Institue Published in 2005 GB 50174 (2008) Code for Design of Electronic Information System Room Published by China Electronics Engineering Design Institute Designated as Guo Biao ( 国标) or National Standards Published in 2008 US vs China “National” standards
  • 4.
    ANSI / TIA942A Tiering system • Tier 1 Basic Data Center • Tier 2 Redundant Components • Tier 3 Concurrently maintainable • Tier 4 Fault tolerant GB 50174 (2008) Class system • C Basic model • B Redundant • A Fault-tolerant-type Classification of DC for comparison
  • 5.
    Where items arenot explicably allowed / restricted, the following terms are used in the standards ANSI / TIA 942A  Not recommended  No requirement  No restriction  Not applicable  Minimum code requirements Classification of DC for comparison GB 50174 (2008) 可 - permissable/ optional 应 - should be used 宜 - advisable
  • 6.
    Comparison - Locations TIA TIER Proximityto airports GB CLASS TIER 1 not applicable GB Class C TIER 2 TIER 3 Not less than 1.6 km. GB Class B TIER 4 Not less than 8 km GB Class A         TIA TIER Proximity to major traffic arteries GB CLASS TIER 1 not applicable GB Class C TIER 2 TIER 3 Not less than 91 m Not less than 100 m GB Class B TIER 4 Not less than 800 m GB Class A
  • 7.
    Comparison - Locations TIA TIER Proximityto flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map GB CLASS TIER 1 No requirement Not advisable to located Class C TIER 2 not within flood hazard area Should not be located Class B TIER 3 Not within 100-year flood hazard area or less than 91 m / 100 yards from 50-year flood hazard area Class A TIER 4 Not less the 91 m from 100-year flood hazard area
  • 8.
    Comparison - Power ANSI/TIA TIERS UtilityEntrance GB CLASSES TIER 1 Single Feed Class C TIER 2 TIER 3 Dual feeds Dual feeds from different sources. Class B TIER 4 Dual feeds from diff. substations  Class A
  • 9.
    Comparison - Genset TIA TIERS Back-updiesel generator system GB CLASSES   not mentioned Class C TIER 1 8 hrs   TIER 2 24 hrs Class B TIER 3 72 hrs Class A TIER 4 96 hrs  
  • 10.
    Comparison – UPS ANSI/TI A TIERS UPSRedundancy GB CLASSE S TIER 1 N Class C TIER 2 TIER 3 N+1         N+X Class B TIER 4 2N         2N or M(N+1) Class A
  • 11.
    Comparison – CRAC/CRAH ANSI/TIA TIERS CRAC/ CRAH GB CLASSES TIER 1 No redundant Unit N Class C TIER 2 1 redundant Unit per critical area N+1 Class B TIER 3 Redundancy to maintain continunity during loss of one source of power     TIER 4 N+X Class A

Editor's Notes

  • #4 Key facts about Anixter today: In spite of difficult economic conditions we are still achieving sales of over €2 billion. Over X% of this figure is accounted for by European sales. Our success is in no small part due to the calibre of our staff, of which we have 5000 worldwide. And with over 110 Registered Communications Distribution Designers – the industry’s highest level of technical accreditation, Anixter is in a unique position as a distributor, able to add real value to the purchasing process. This is the highest number of RCDDs in the industry. At any one time Anixter holds over €427 million of inventory and 185,000 different products which means that usually our partners receive orders immediately from stock. Anixter works with 2000 of the world’s market leading vendors to ensure that we carry the best, most reliable products for our partners. Our network of reseller partners is carefully chosen to ensure that we work only with experienced, world-class resellers that deliver the highest possible service to end customers.
  • #5 Key facts about Anixter today: In spite of difficult economic conditions we are still achieving sales of over €2 billion. Over X% of this figure is accounted for by European sales. Our success is in no small part due to the calibre of our staff, of which we have 5000 worldwide. And with over 110 Registered Communications Distribution Designers – the industry’s highest level of technical accreditation, Anixter is in a unique position as a distributor, able to add real value to the purchasing process. This is the highest number of RCDDs in the industry. At any one time Anixter holds over €427 million of inventory and 185,000 different products which means that usually our partners receive orders immediately from stock. Anixter works with 2000 of the world’s market leading vendors to ensure that we carry the best, most reliable products for our partners. Our network of reseller partners is carefully chosen to ensure that we work only with experienced, world-class resellers that deliver the highest possible service to end customers.
  • #6 Key facts about Anixter today: In spite of difficult economic conditions we are still achieving sales of over €2 billion. Over X% of this figure is accounted for by European sales. Our success is in no small part due to the calibre of our staff, of which we have 5000 worldwide. And with over 110 Registered Communications Distribution Designers – the industry’s highest level of technical accreditation, Anixter is in a unique position as a distributor, able to add real value to the purchasing process. This is the highest number of RCDDs in the industry. At any one time Anixter holds over €427 million of inventory and 185,000 different products which means that usually our partners receive orders immediately from stock. Anixter works with 2000 of the world’s market leading vendors to ensure that we carry the best, most reliable products for our partners. Our network of reseller partners is carefully chosen to ensure that we work only with experienced, world-class resellers that deliver the highest possible service to end customers.