- Tier 1: composed of a single path for power and cooling distribution, without redundant components, providing 99.671% availability.
- Tier II: composed of a single path for power and cooling distribution, with redundant components, providing 99.741% availability
- Tier III: composed of multiple active power and cooling distribution paths, but only one path active, has redundant components, and is concurrently maintainable, providing 99.982% availability
- Tier IV: composed of multiple active power and cooling distribution paths, has redundant components, and is fault tolerant, providing 99.995% availability.
Thursday, February 7, 2013
Data Center Tiers Explained
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