In summer, data centers not only need to ensure safe and stable operations in high temperature and rainy weather, but they also face the pressure of reducing overall operational costs. However, in many bidding processes for server rooms, PDU (Power Distribution Unit) is often not listed separately like UPS, distribution cabinets, and racks, and its parameters are not clearly specified, with some even just indicating power sockets. This can cause major problems in the later stages, such as device incompatibility, non-standard distribution, and severely insufficient budgets. These issues stem from both parties in the bidding not knowing how to choose the appropriate PDU power unit.

PDU (Power Distribution Unit), also known as a power distribution strip for racks, is designed to provide power distribution for rack-mounted electrical equipment. It comes in various types, with different functions, installation methods, and socket combinations to meet different power distribution requirements. The application of PDU ensures a neat, reliable, safe, and professional power distribution in the server racks, making maintenance more convenient and reliable.

1. How Does PDU Help Data Centers Safely Get Through Summer?

Using an intelligent PDU can help data centers safely get through summer. An intelligent PDU, also known as a remote-controlled power socket, is designed to meet the needs of microenvironment monitoring applications in server rooms. On top of the traditional PDU functions, it adds external monitoring of current, voltage, temperature, and humidity, and can independently control power sockets remotely.

Advantages of Intelligent PDU Over Basic PDU:

Basic PDU can only provide basic power distribution functions; whereas intelligent PDUs offer advanced features such as power metering, environmental monitoring, and remote port control.

Intelligent PDU helps reduce data center operational costs, increases uptime and reliability, and improves equipment Mean Time to Repair (MTTR), enhancing power usage efficiency.

Powerful Design of Intelligent PDU, Withstanding Harsh Conditions:

High-grade input cable connectors are stress-relieved and durable, providing superior performance compared to common low-cost clip designs.

The enclosure is solid, with no perforations or vents, preventing particles from contacting internal conductors and reducing the risk of short circuits, while ensuring safe heat dissipation.

Space-saving, with optimal airflow and easy physical installation. Can operate in environments with temperatures up to 60°C (140°F), ensuring safe operation even under maximum load in high-density setups.

Powerful Monitoring and Management Functionality Ensures Safe and Efficient Operations in Summer:

Monitoring socket-level power outputs and redundant detection for effective load balancing, providing detailed power supply status for each server.

Gigabit Ethernet ports with auxiliary backup network connections to ensure reliable monitoring, enabling both IT network and building management systems to share insights and data. Real-time monitoring of device energy consumption, hotspots, and PUE, as well as balancing heat and power loads.

2. How to Choose PDU Power Units?

Choose based on specific needs: Consider the power requirements of your equipment and make sure the PDU matches your needs.

Choose products from reputable manufacturers: Some manufacturers may offer PDU units, but they might not specialize in them. Carefully consider the product before choosing.

Check for proper quality certifications: Ensure the manufacturer is certified and the product has quality certifications. Choosing certified products increases safety.

Consider after-sales service: Even the best products can fail at times. It's important to check after-sales support and make sure they have reliable service policies.

3. Key Points of PDU Selection During Different Phases of Server Room Construction

PDU Selection Tips:

The total power of distribution branches in the rack + safety margin = total PDU power on that circuit.

The number of devices in a rack + safety margin = total number of PDU sockets needed.

Distribute large power-consuming devices across different PDUs to balance the current load.

Choose the appropriate PDU socket configuration based on whether devices have detachable power cables.

For high-density racks, vertical PDU with more sockets is preferred; for low-density racks, horizontal PDU is more suitable.

Always provide a separate budget for PDU to avoid severe budget shortages.

1. Installation Phase:

Ensure that the power capacity of the distribution socket matches the power requirements of the PDU.

For horizontal PDUs, make sure to leave enough U-space for installation. For vertical PDUs, align the cabinet’s side panels with the PDU’s installation dimensions.

2. Operational Phase:

Monitor temperature changes in the PDU socket to prevent overheating.

Use remote monitoring features to check current variations and assess the equipment’s operating condition.

Use cable management features of the PDU to reduce the outward pulling force of device plugs.

3. Customization Considerations:

• Customization process: Determine total current based on total device power and add a 50% safety margin.

• Choose cable length and material based on your requirements.

• Decide on output socket types and quantities (e.g., common universal sockets).

• Choose the required protection features (e.g., surge protection, overload protection, remote monitoring).

• Choose the installation method (horizontal or vertical).

• Material of the product (steel plate or profile).

PDU is an essential accessory for server rooms, and its quality directly affects the operation of equipment. Choosing a reliable PDU ensures safe and efficient operation in the server room.