Joined: Mon Feb 27, 2017 4:06 am
|A Tier-III data center is defined as a place with dual-powered and redundant servers, network links, and IT components. Tier-III data center is most preferred data center tier in which IT components powered with active, independent and multiple cooling resources and power sources.
Also referred to as Level 3 data Center, it has a unique combination and capabilities of both, Tier 1 & Tier 2 data center. It is established by Uptime Institute. The Tier-III data center’ IT components could be removed or replaced with no interruption in the daily operations of data center.
With redundant power supply, in this data center there is negligible downtime. The Tier-III data center guarantees 99.98% availability with only two hours downtime each year. In this configuration, you can manage the maintenance periods not affecting service continuity on servers. Though, these Tier-III data centers won’t be secured from serious incidents happening in different infra components. You can also say that Tier-III data center don’t possess modular redundancy.
By leveraging following steps, the power supply infra of data center can meet specifications of Tier-3 data center.
1. Power Supply Via Utility Service Provider
The Tier-III data center specifications need a data center must have a backup as diesel generators for power supply. ATS – Automatic Transfer Switch automatically switches the backup generator in case utility power supply fall down.
2. Backup Generators
These data center specs need diesel generators with minimum 12 hours fuel supply. The data center can achieve the redundancy with two tanks with a capacity of 12 hours fuel supply.
3. Power Supply Panel
It distributes the power to IT load (like networks or servers) via UPS. In addition, it also gives power to non-IT loads such as air-conditioning and others.
The power distributed from distribution panel is supplied to the server racks and network infrastructure. The data center needs every UPS to be connected with a particular distribution box for concurrent maintainability and redundancy as it ensures that just a single circuit fall down in a scenario of maintenance or UPS failure.
5. Server Racks
Every server rack should have 2 power supply boxes to follow the specifications of Tier-III data center. The dual power supply in the servers of every rack will help in connecting them to power supply boxes.