Noun
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Sounds like: "tier three da-ta cen-ter"
A Tier 3 data center is the second-highest certification in the Uptime Institute’s system of classifying data center performance into four tiers.
In addition to meeting the requirements of Tier 1 and Tier 2 data centers, Tier 3 data centers must achieve the following:
- N+1 redundancy. Tier 3 data centers provide N+1 redundant power and cooling distribution paths to allow for routine maintenance without downtime.
- 72-hour outage protection. Three days of independent power that is not connected to any outside source is required.
- No more than 1.6 hours of downtime per year. This is the maximum amount of downtime allowed in a year for maintenance and emergencies.
- 99.982% uptime. Some downtime may occur for unplanned maintenance and emergencies. Customer-facing services may be impacted.
Tier 3 data centers are the most common certification by the Uptime Institute and are often utilized by organizations larger than a typical small- to medium-sized business. Tier 3 providers feature many of the offerings of Tier 4 providers but guarantee slightly less uptime and are not completely fault-tolerant.
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WORD OF THE DAY:
Cloud ComputingCloud computing is the delivery and on-demand availability of computing resources (e.g., servers, network, and storage) over the internet without requiring direct active management by the customer. Cloud computing can also be described as data centers that are distributed over multiple locations from central servers and are available to many users. When cloud resources are located close to the end user, it may be defined as an edge data center.
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