What Type of UPS Do Data Centers Use?


Scott Campbell

What Type of UPS Do Data Centers Use?

When it comes to data centers, uninterrupted power supply (UPS) systems are crucial to ensure the continuous operation of critical infrastructure. These UPS systems provide backup power in case of a main power failure or fluctuation, protecting sensitive equipment and preventing data loss.

But what type of UPS do data centers use? Let’s explore the different options.

1. Line-Interactive UPS

A line-interactive UPS is commonly used in small to medium-sized data centers.

It is designed to correct common power issues such as voltage fluctuations and sags without switching to battery power. This type of UPS uses an automatic voltage regulator (AVR) to stabilize the incoming voltage and keep it within acceptable limits.

2. Online Double Conversion UPS

In larger data centers where maximum protection is required, an online double conversion UPS is the preferred choice.

This type of UPS provides a constant flow of clean power by converting incoming AC power to DC and then back to AC again. The load always runs off the battery, ensuring a seamless transition during power outages or irregularities.


  • Fault-tolerant: Online double conversion UPS systems offer the highest level of fault-tolerance as they isolate connected devices from any disturbances in the main power supply.
  • Consistent Power Quality: By continuously regulating and filtering incoming power, this type of UPS ensures a consistent flow of clean energy, protecting sensitive equipment from electrical noise and surges.
  • No Transfer Time: During a power interruption or fluctuation, an online double conversion UPS immediately switches to battery mode, providing uninterrupted power without any transfer time.

3. Flywheel UPS

A flywheel UPS is a unique and innovative technology that uses the kinetic energy of a spinning flywheel to provide short-term backup power. As the main power supply is interrupted, the flywheel spins faster and converts its kinetic energy into electrical energy to keep the data center running until a backup generator or another UPS system takes over.


  • High Energy Efficiency: Flywheel UPS systems have higher energy efficiency compared to traditional battery-based systems as they do not require constant charging and discharging.
  • Compact Design: With no need for bulky batteries, flywheel UPS systems are more compact and require less space in a data center.
  • No Maintenance: Unlike batteries that need regular maintenance and replacement, flywheels have a longer lifespan and require minimal maintenance.

4. Modular UPS

In recent years, modular UPS systems have gained popularity in data centers due to their scalability and flexibility.

These systems consist of multiple power modules that can be added or removed based on the changing needs of the data center. If one module fails, the others continue to provide power without any disruption.


  • Easier Scalability: With modular UPS systems, it’s easier to scale up or down as per the evolving demands of a data center without replacing the entire system.
  • Fault Isolation: In case of a failure in one module, other modules continue to operate independently, ensuring uninterrupted power supply.
  • Easier Maintenance: Modular design allows for easier maintenance as individual modules can be taken offline for repair or replacement while the rest of the system remains operational.

In conclusion, data centers rely on different types of UPS systems to ensure uninterrupted power supply and protect critical infrastructure. The choice of UPS depends on factors such as the size of the data center, power requirements, and level of fault-tolerance needed. Whether it’s a line-interactive UPS for small-scale operations or an online double conversion UPS for maximum protection, each type has its own advantages and plays a crucial role in maintaining the stability and reliability of data centers.

Discord Server - Web Server - Private Server - DNS Server - Object-Oriented Programming - Scripting - Data Types - Data Structures

Privacy Policy