What Is PDU In Data Center?

PDU In Data Center


In the world of data centers, where uptime and reliability are paramount, ensuring a continuous power supply is a critical task. A Power Distribution Unit (PDU) plays a crucial role in this aspect by distributing electrical power from a single source to multiple devices within the data center infrastructure. Understanding the significance of PDUs and their various types is essential for data center operators and IT professionals who manage these facilities.

Understanding PDU (Power Distribution Unit)

A Power Distribution Unit, commonly known as a PDU, is a device designed to distribute electrical power efficiently and safely to multiple connected devices within a data center or server room. PDUs serve as intermediaries between the main power source (usually a UPS or a generator) and the IT equipment, such as servers, networking devices, storage units, and other critical hardware.

Types of PDUs

There are several types of PDUs available, each catering to different data center requirements and providing varying levels of control and monitoring capabilities.

  • Basic PDU: The basic PDU offers a simple power distribution function without any advanced monitoring features. It provides power outlets to connect devices directly, but it lacks real-time monitoring and remote control capabilities.
  • Metered PDU: Metered PDUs come with built-in power meters that allow administrators to monitor power consumption at the PDU and individual outlet levels. This data helps optimize power usage and facilitates capacity planning.
  • Monitored PDU: A monitored PDU goes a step further by providing real-time power monitoring along with remote access to power usage data. Administrators can receive alerts and notifications in case of power anomalies.
  • Switched PDU: The switched PDU offers the highest level of control and management. It allows remote power cycling of outlets, providing the ability to turn devices on or off from a distance. This level of control enhances efficiency and simplifies troubleshooting.

Importance of PDUs in Data Centers

In data centers, where critical applications and services rely on uninterrupted power supply, PDUs play a vital role in ensuring continuous operations. Properly designed and managed PDUs offer several benefits:

  • Optimal Power Distribution: PDUs evenly distribute power to connected devices, preventing overloads and ensuring each piece of equipment receives the necessary power.
  • Remote Management: Advanced PDUs with remote monitoring and control capabilities enable IT personnel to manage power distribution and troubleshoot issues without physically accessing the equipment.
  • Capacity Planning: Metered and monitored PDUs provide valuable insights into power consumption, helping data center operators plan for future growth and optimize resource allocation.
  • Improved Uptime and Reliability: By mitigating the risks of power-related incidents, PDUs contribute to enhanced uptime and overall data center reliability.
  • Energy Efficiency: PDUs that support power monitoring and management aid in identifying energy-intensive devices, promoting energy-efficient practices.


In conclusion, a Power Distribution Unit (PDU) is a crucial component in any data center, ensuring reliable power distribution and facilitating remote management and monitoring. By understanding the types of PDUs available, considering specific data center needs, and following best practices in installation and maintenance, data center operators can optimize power distribution and enhance overall efficiency.


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