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State Data Center Tier III Design
State Achieves Tier III Certification

In 2005, Oregon state government finished building a new, consolidated data center to serve the majority of the state’s computing needs. The design of the facility and its infrastructure meets the Uptime Institute’s standards for Tier III certification. The institute’s classification system creates a benchmark for reliable infrastructure design in data centers. Achieving Tier III standards means the State Data Center’s facility is a vast improvement over the state’s previous data centers.  
From the start of the design process, the goal of the State Data Center (SDC) was to provide system availability at 99.982 percent. The state contracted with a design/build team experienced in construction of data centers. In March 2005, ComputerSite Engineering confirmed that the SDC met Tier III standards.

A large body of engineering work goes into designing systems for buildings. In a Tier III facility, any one component can be removed for replacement or repair without interrupting service. These systems include air conditioning, power supply, water supply, communications, and all components that regulate these systems.
For the SDC, this means:
  • Any of the air handlers can shut down with no impact.
  • Power lines can go down and full power remains.
  • Power lines and one of the generators can go down and full power remains.
  • Any section or valve of chilled water pipe can break and the cooling system remains fully functional.
Redundant paths and systems, and the ability to remove systems for maintenance—without service interruption—are design strategies the SDC’s customers rely upon.