Power Capacity: The power capacity of a Rack PDU indicates the maximum electrical load it can handle.
It is usually expressed in volt-amperes (VA) or watts (W). PDUs come in various power ratings, such as 1kVA, 2kVA, 5kVA, etc., depending on the needs of the data center or equipment it serves.
Input and Output Power Connections: Rack PDUs have specific input and output connectors. The input connector is used to connect the PDU to the main power source, while the output connectors distribute power to the devices in the rack. Common input connections include NEMA, IEC C20, and powerCON, while output connections can be IEC C13, IEC C19, or others.
Form Factor: Rack PDUs are designed to fit into standard server racks. Common form factors include 1U (1.75 inches high), 0U (vertical mount), and horizontal/vertical mount PDUs with varying numbers of outlets.
Single-phase or Three-phase Power: PDUs can support single-phase or three-phase power distribution. Three-phase PDUs are more common in high-density data centers where power demands are substantial.
Monitoring and Management: Advanced Rack PDUs offer monitoring features such as current, voltage, power consumption, and temperature. They may have built-in network interfaces (Ethernet or Wi-Fi) to facilitate remote management and monitoring.
Metered, Monitored, or Switched PDUs: Metered PDUs provide basic power usage data, monitored PDUs offer more detailed monitoring and alerting capabilities, while switched PDUs enable remote power cycling of individual outlets.
Redundancy and Failover: Some PDUs support redundant power inputs, ensuring continuous power supply even if one power source fails.
Circuit Protection: PDUs often include circuit breakers or fuses to protect connected devices from overcurrent and short circuits.
Environmental Considerations: High-quality PDUs include features like temperature and humidity sensors to monitor the data center environment and prevent overheating.
Mounting Options: PDUs can be mounted horizontally or vertically, depending on the rack configuration and space requirements.
Remote Control and Access: Advanced PDUs may have web-based interfaces, SNMP support, or APIs, allowing administrators to remotely control power outlets and access data.
Energy Efficiency: Some Rack PDUs are designed with energy-saving features, like individual outlet control and power scheduling, to optimize power usage and reduce operational costs.
Safety Compliance: Look for PDUs that comply with relevant safety standards, such as UL (Underwriters Laboratories) and CE (Conformité Européene).
Vendor and Warranty: Choose PDUs from reputable vendors that offer good warranty and customer support.
Scalability: Consider the future expansion needs of your data center and choose a PDU that allows easy scalability to accommodate additional devices.
