Data Centre: Definition A data centre is usually a dedicated space that houses networked computer servers that are used by organizations to store, process, and distribute large volume of data. What is a Data Centre Tier? The standard methodology followed for ranking data centres in terms of their potential infrastructure performance (uptime) is called data centre tiers. Data centre tiers are ranked from 1 to 4. Higher ranked data centres have more potential and uptime as compared to lower ranked data centres. Importance of Data Centre Tier Rankings
Data Centre Tiers Data Centre Tier are categorised into 4 rankings: Tier 1 It has a single path for power and cooling along with very few, if any, redundant and backup components. It has an expected uptime of 99.671% which translates to 28.8 hours of downtime annually. Tier 2 Like tier 1, tier 2 also has a single path for power and cooling along with some redundant and backup components. It has an expected uptime of 99.741% which translates to 22 hours of downtime annually. Tier 3 A tier 3 data centre has multiple paths for power and cooling. Also, any power and cooling equipment servicing the data centre can be shut down for maintenance without affecting the IT processing. It has an expected uptime of 99.982% which translates to 1.6 hours of downtime annually. Tier 4 Apart from all the features of tier 1, 2, and 3, tier 4 is also completely fault-tolerant and has redundancy for every component. It has an expected uptime of 99.995% which translates to 26.3 minutes of downtime annually. We hope that this information will help you get a proper idea of data centres and tier rankings so that you can choose the one that fits your business needs perfectly.
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