The deification of Data Centre Tiers is a sophisticated and broad operating concept. A tiered design approach is used to classify the operation mode, performance level, and uptime of a data centre. Tier 1, Tier 2, Tier 3, Tier 4, and Tier 5 data centres are the internationally recognised and accepted Tiers & designs topologies for categorising the data centre operation, performance, and uptime. Tier 4 data centre provides optimal operation level and is described as the most redundant, robust and less prone to failures as compared to Tier 1.
What is Data Centre for?
By definition data centre can be 1 out of 4 Tiers shared building facility to house digital communication and network devices. Due to the shared nature of data centre, digital equipment from different companies can be housed there. A standard Tiered approach is used to classify the level of operation and uptime of a data centre. Devices hosted in a data centre are generally managed remotely through telnet, shh (Secure Shell), remote desktop, or VNC applications. Data Centres are commonly designed to provide resiliency and backup for communication circuits, electric power, air conditioning, and other vital components.
The cost of the data centre is hugely dependent on the kind of Data Centre Tier you built or choose for hosting.
Tier 1 Data Centre
Tier 1 guarantees 99.671% uptime and availability. This Tier doesn’t provide resiliency for network circuits and uplinks. Tier 1 also provide non-redundant servers solutions.
Tier 2 Data Centre
Tier 2 guarantees 99.741% uptime and availability. This Tier inherits all qualities and features of Tier 1 pulse it provides resiliency and backup for network circuits and server solutions.
Tier 3 Data Centre
Tier 3 guarantees 99.982% uptime and availability. This Tier inherits all qualities and features of Tier 1 and Tier 2, plus it provides dual power and multiple uplinks and network circuits for connectivity.
Tier 4 Data Centre
Tier 4 guarantees 99.995% uptime and availability. This Tier inherits all qualities and features of Tier 1, Tier 2 and T3, plus all components are fully fault-tolerant including network circuits, servers, storage, chillers, HVAC systems etc. and is completely redundant in features and power.
Tier 5 Data Centre
Tier 5 data centres provide 30 key elements, the features are mainly focused on resiliency. Tier 5 takes the resiliency, availability and reliability to the next level.
