The different level of data center signifies the ease of maintenance and failure management. Depending upon their needs users can opt from these four levels. Power management and the backup facility is well facilitated with tier 3 data center.
The data centers are categorized in four different levels that are known as Tiers known as Tier 1, 2, 3 and tier 4 data center. These standards ensure redundancy in the data center by linking a certain number of guarantees on the type of hardware deployed.
The tier 1 data center includes the email hosting and web hosting services along with cooling capacity. But this architecture does not contain backup and maintenance feature. Whereas in tier 2 data center a minor difference can be measured. What you can do as a difference in tier 2 level is the replacement or repair of components without causing shutdowns. It reduces the occurrence of unplanned and helps to maintain server also.
With this outline, you would be able to manage maintenance periods without upsetting the stability of service on the servers. Though, this model of the data center will not be secure from outages in the event of serious cases occurring on different infrastructure components. In other words, the Tier 3data centers have total modular redundancy more than tier 2 and less than tier 4.
As you know that it has the similar Tier-2 infrastructure, a Tier-3 facility has redundant components, but with a big positive difference in the quality of maintenance or can say it has better support quality. The tier-3 data center can support maintenance periods without any effect on data processing or without interrupting the communication flow. The server providers and the server automatically maintain the platform without making the users in the notice that the data centers are undergoing maintenance.
Because of its capacity for simultaneous maintenance, sites do not experience annual shutdowns that reduce the operational and IT cost as well. Any unplanned outages in this model are near about 1.6 hours each year, thus delivering about 99.98% availability to site visitors. The chances of failure and communication damage are very low.
Tier 3 data center offers better laying-off ability with multiple power feed and backup organizations that check server equipment can be upheld in the condition of severe power failures, fundamentally this Tier 3 involves backup power, adding another guaranteed provided by Tier 2 facilities.
With this level of the data center, you would be paying for the greater security and protection. Typically, government agencies and telecoms companies use Tier 3 data center amenities.