Otis Singleton
PDU stands for Power Distribution Unit. It is a device used to control and distribute electric power in data centers. PDUs are available in both AC and DC models and are designed to provide standard electrical outlets for data center equipment. They can be categorized as basic or intelligent, with the former being straightforward devices designed to distribute power without extra features, and the latter offering advanced capabilities such as remote management and power monitoring.
What does PDU mean in electricity?
| Characteristics | Values |
|---|---|
| Full Form | Power Distribution Unit |
| Type | Basic PDU, Monitored PDU, Switched PDU, Intelligent PDU, Cabinet PDU, Portable PDU, Standard PDU, Metered Inlet PDU, AC PDU, DC PDU, Rack-Mounted PDU, Vertical PDU, Horizontal PDU, Single-Phase PDU, Three-Phase PDU |
| Function | Controls and distributes electric power to multiple devices within a data centre or other facility, provides a centralized power source for multiple devices, transmits electricity through its outlets to network equipment, provides electrical protection |
| Use Case | Ideal for organized and efficient energy management in server environments, can be used in project management, networking, and Data Center Infrastructure Management (DCIM) |
| Installation | Mounted on a rack, placed on the floor, in a cabinet, or portable |
| Mounting | Vertical or Horizontal |
| Input Power | AC or DC |
| Voltage | 120, 240, or 330 volts |
| Number of Outlets | Varies, can be up to 40 outlets |
| Features | In-depth monitoring, remote management, power metering, power outlet on/off control, alarms, bulk firmware updates, cloning configurations, backup restoration, SNMP trap notifications, security |
| Compatibility | NEMA standard set by the US National Electrical Manufacturers Association |
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What You'll Learn
Basic PDUs are large power strips without surge protection
A power distribution unit (PDU) is a device used in data centers to control and distribute electric power. The most basic PDUs are large power strips without surge protection. They are designed to provide standard electrical outlets for data center equipment and have no monitoring or remote access capabilities.
Basic PDUs are simple devices that primarily distribute power without extra features. They are often categorized as standard PDUs or monitored PDUs. Standard PDUs function as power strips, providing multiple outlets for distributing electricity to connected devices. They do not offer advanced monitoring or management capabilities. On the other hand, monitored PDUs provide basic electrical data displays, allowing for a minimal level of monitoring, such as current and voltage.
Compared to power strips, basic PDUs offer several advantages. Firstly, they can support higher amperages and have built-in circuit breakers to protect the branch circuit wiring. Secondly, they provide overload protection and distribute power more efficiently, ensuring that equipment receives the best available power to maintain operation. Additionally, basic PDUs are designed to be mounted on a rack or cabinet, either horizontally or vertically, taking up less space and providing stability.
While basic PDUs provide a reliable source of power distribution, they lack the advanced features found in intelligent PDUs. Intelligent PDUs offer remote management capabilities, allowing administrators to control power outlet on/off functions and receive alerts when circuits approach maximum capacity. They are an important part of an integrated monitoring system that protects critical equipment.
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Intelligent PDUs offer remote management and monitoring
A power distribution unit (PDU) is a device used to control and distribute electric power in data centers. The most basic PDUs are large power strips without surge protection, designed to provide standard electrical outlets for data center equipment.
More advanced PDUs, known as intelligent PDUs, provide real-time monitoring, remote access, and power control capabilities. These units are an important part of an integrated monitoring system that protects critical equipment. They offer advanced features such as remote management, energy management, and future-ready design platforms.
Intelligent PDUs are becoming crucial for ensuring efficient power distribution and management, adapting to changes in capacity and density, and improving energy efficiency and operational reliability. They can be further categorized into monitored and switched PDUs. Monitored PDUs provide basic electrical data displays, while switched PDUs allow for power control at individual outlets.
The benefits of intelligent PDUs include the ability to:
- Monitor and control power at individual outlets
- Remotely shut down power in the event of an emergency
- Experiment with different power densities without tripping circuit breakers
- Monitor temperature and humidity levels to prevent equipment overheating
- Access multiple PDUs under a single IP address
- Integrate with electronic locks for added security
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PDUs can be mounted on a rack, placed on the floor, or in a cabinet
A power distribution unit (PDU) is a device used in data centers to control and distribute electric power. They are designed to provide standard electrical outlets for data center equipment and have no monitoring or remote access capabilities.
Floor-mounted PDUs, sometimes referred to as Main Distribution Units, provide a crucial management bridge between the building's primary power source and various equipment racks within a data center. They are larger and more expensive than rackmount PDUs and can supply 300kVA or more. Floor PDUs work in conjunction with rackmount PDUs to streamline power delivery in data centers with large numbers of racks and cabinets.
Cabinet PDUs are standalone units that include main and individual circuit breakers and power-monitoring electrical panels. They are used when an organization needs to provide power for multiple racks with multiple high-current circuits. They are more compact and space-saving, accommodating growing power loads in high-density data centers.
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They can be powered by AC or DC power
Power distribution units (PDUs) are devices used in data centers to control and distribute electric power. They are designed to provide standard electrical outlets for data center equipment and have no monitoring or remote access capabilities. More advanced PDUs provide real-time monitoring and remote access capabilities. They can be mounted on a rack, placed on the floor or in a cabinet, or be portable.
PDUs can be powered by alternating current (AC) or direct current (DC) power. AC PDUs are typically powered by AC power and distribute power with an alternating current. DC PDUs distribute power with a direct current and can be powered by either AC or DC power, depending on the requirements of the site. The choice between AC and DC power is an important consideration when selecting a PDU, as the two types have very different connectors.
AC PDUs are typically powered by standard AC power sources, such as a wall outlet, and distribute power with an alternating current. They are commonly used in homes and offices, as they have the standard plugs found in these settings. AC PDUs are suitable for devices that use AC power and have the appropriate connectors.
DC PDUs distribute power with a direct current, which is commonly used by many rack-mounted devices. DC PDUs can be powered by either AC or DC power, depending on the requirements of the site. They are designed to provide electric current in the direct current format that many rack-mounted devices use. DC PDUs are likely to have industrial connectors that accept bare wiring.
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PDUs are used to power multiple devices in data centres
A power distribution unit (PDU) is a device used to control and distribute electric power in data centres. PDUs are designed to provide standard electrical outlets for data centre equipment and can be installed directly onto a rack. They are available in both alternating current (AC) and direct current (DC) models, with the former being more common. The most basic PDUs are large power strips without surge protection, while more advanced PDUs offer real-time monitoring and remote access capabilities.
There are two main categories of PDUs: Basic PDUs and Intelligent (networked) PDUs or iPDUs. Basic PDUs simply distribute power from the input to multiple outlets, much like a power strip. Intelligent PDUs, on the other hand, offer additional features such as remote management of power metering information, power outlet on/off control, and alarms. They are an important part of an integrated monitoring system that protects critical equipment.
Standalone cabinet PDUs are self-contained units that include main and individual circuit breakers and power monitoring panels. They are designed to be mounted on a standard DIN rail in cabinets. Rack-mounted PDUs, on the other hand, are installed directly into the equipment rack, reducing the distance between the power outputs of the PDU and the power inputs of the devices. This type of PDU is ideal for balancing power loads for specific devices like servers and switches.
Overall, PDUs play a critical role in managing and distributing electricity supply in data centres, ensuring that multiple devices have access to a reliable power source.
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Frequently asked questions
PDU stands for Power Distribution Unit.
A PDU is a device used to control and distribute electric power to multiple devices within a data centre or other facility. It provides a centralised power source, reducing the need for multiple power sources and simplifying cable management.
PDUs can be categorised as basic or intelligent. Basic PDUs distribute power to multiple outlets, while intelligent PDUs allow for remote management and monitoring of power distribution. Intelligent PDUs also offer features such as power outlet on/off control, alarms, and integration with electronic locks.
