Why Does a Data Center Need a UPS?
An uninterruptible power supply (UPS) is a critical component of any professional data center infrastructure. It ensures that servers, storage systems, and network devices continue to receive power in the event of an outage or fluctuation. Without a UPS, even a brief power failure could result in data loss or system downtime.
What Is a UPS and How Does It Work?
The UPS is installed directly in the power line of connected systems. It contains rechargeable batteries, control electronics, and inverters. In case of power failure or voltage fluctuations, the UPS instantly switches to battery power, supplying the connected systems without interruption. Depending on the model, this transition occurs within milliseconds—fast enough to keep even sensitive systems online.
Functions and Protection
A UPS does more than just bridge power outages. It protects devices against:
- Power failures and brownouts
- Overvoltage and undervoltage
- Frequency and voltage fluctuations
- Electrical noise and harmonics
These issues can occur in any power grid—for example, due to switching large loads, lightning strikes, or short circuits. The UPS compensates for these disturbances and ensures that all connected systems remain stable and protected.
UPS Capacity and Runtime
The capacity of a UPS is measured in volt-amperes (VA) and typically ranges from 300 VA to several hundred kVA. The bridging time depends on the size of the battery bank—from a few seconds to several hours. In larger data centers, UPS systems are often combined with diesel generators, which recharge the batteries and ensure long-term operation during extended outages.
UPS in Data Centers and Beyond
Uninterruptible power supplies are essential wherever continuous power is required — in hospitals, industrial plants, offices, and especially in data centers. In case of a power failure, servers can be safely shut down or seamlessly powered until generators start, preventing data loss or system corruption. UPS systems communicate with servers via Ethernet, SNMP, RS-232, or USB interfaces for monitoring and automation.
UPS at centron
The centron Data Center is equipped with redundant UPS systems and emergency generators. This guarantees an annual availability of more than 99.9 % and ensures secure, uninterrupted operation for all hosted environments — from Managed Servers to Cloud Hosting solutions.
Conclusion
An uninterruptible power supply is indispensable for modern IT infrastructures. It ensures continuous operation, protects against power disturbances, and minimizes downtime. Combined with professional data center design, it forms the foundation for reliability and business continuity.