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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Electronic Door LocksElectronic door locks are one of the most common and effective means of data center physical security that keep data center assets in enclosed cabinets or containment areas such as cages locked.
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