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Data Centers Design & Consultancy

The Uptime Institute( www.uptimeinstitute.com)  created the Tier Classification system as a benchmark for reliable data center infrastructure design. Specifying a tier level for an SME is like buying a suit or dress in which each outfit has different requirements and different costs. Setting up a one-size-fits-all standard will not work—either for business clothes or a data center.

Even sister data centers will have different requirements. For example, remote sites probably will have lower requirements than the main office, depending on how vital their role.

The tier levels give an idea of where along the continuum a data center might fall. But it is up to management to specify just how reliable a center has to be. Can you live with a few hours downtime every month? A few minutes? None?

We Rehmat Taj Enterprises work for following tiers:
Tier I: A single path for power and cooling distribution, without redundant components, providing 99.671% availability.
Tier II: A single path for power and cooling distribution, with redundant components, providing 99.741% availability.
Tier III: Multiple active power and cooling distribution paths but only one path active, redundant components, concurrently maintainable, providing 99.982% availability.
Tier IV: Multiple active power and cooling distribution paths, redundant components, fault-tolerant, providing 99.995% availability.

It is unlikely that the typical SME will need Tier IV redundancy unless it is involved in a highly specialized area such as banking or health care, where regulations such as the Sarbanes-Oxley rules apply.


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