Q. What is data center tiers? What is tier 1 data center? Which tier / level is the best for maximum uptime?
A. Tier 1 to 4 data center is nothing but a standardized methodology used to define uptime of data center. This is useful for measuring:
a) Data center performance
b) Investment
c) ROI (return on investment)
Tier 4 data center considered as most robust and less prone to failures. Tier 4 is designed to host mission critical servers and computer systems, with fully redundant subsystems (cooling, power, network links, storage etc) and compartmentalized security zones controlled by biometric access controls methods. Naturally, the simplest is a Tier 1 data center used by small business or shops.
- Tier 1 = Non-redundant capacity components (single uplink and servers).
- Tier 2 = Tier 1 + Redundant capacity components.
- Tier 3 = Tier 1 + Tier 2 + Dual-powered equipments and multiple uplinks.
- Tier 4 = Tier 1 + Tier 2 + Tier 3 + all components are fully fault-tolerant including uplinks, storage, chillers, HVAC systems, servers etc. Everything is dual-powered.
Further recommended readings:
- Uptime Institute
- TIA-942 Data Center Standards Overview - 102264AE
- Telecommunications Infrastructure Standard for Data Centers
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- Last Updated: 06/3/08



{ 6 comments… read them below or add one }
do post me more info about data center infrastructure…great stuff..keep it up…sudish
hi… ambrose here,
Very soon im going to sit for CDCP exam;
anyone give me some tips.?
how should i prepare for the exam?
Please provide data centre related ifformation.
HELLO I AM FAHEEM
I want to learn about data center. So please give me easy understand hint about data centre.
Planning to own a data center, need information about costing and other details.
AOA; WE ARE GOING TO START CONSTRUCTION OF A NEW DATA CENTRE, CAN ANY ONE SHARE WITH ME THE BREIF SPECS OF TIER 3 DATA CENTRE, MY ID IS iqbal.s@hotmail.com
THANKS
IQBAL