Data center tiers, ranging from Tier 1 to Tier 4, are classifications that describe the reliability and infrastructure of a data center.
- Tier 1 is the most basic, with no redundancy and can have frequent downtime, suitable for non-critical operations.
- Tier 2 offers partial redundancy, providing more reliability with backup systems for power and cooling.
- Tier 3 data centers are fully redundant, allowing for maintenance without downtime, ideal for businesses needing high availability.
- Tier 4, the most advanced, is fully fault-tolerant with duplicate systems, offering near-perfect uptime for critical operations like financial institutions or governments.
