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How to Choose the Right Rack PDU When designing a server rack or expanding a data centre, most attention is typically given to servers, switches, storage and cooling. Yet one component is still often overlooked: the Rack Power Distribution Unit (Rack PDU). This is surprising, because the PDU forms the foundation of the power distribution […]
Many organisations only review their PDU strategy when deploying new racks or expanding existing infrastructure. In these situations, the focus often falls on the number of outlets or the purchase price. While understandable, this approach overlooks factors that have become increasingly important as power densities continue to rise. The rapid growth of AI workloads, GPU […]
As a result, one question has become more important than ever: How much power is actually available right now, rather than how much power should theoretically be available? For data centre operators, the challenge is shifting from static capacity planning to real-time power visibility. Why Traditional Rack Power Budgeting Falls Short Most capacity planning tools […]
What Is a Branch in a Rack PDU? A branch is an individual protected electrical circuit inside a Rack PDU. Each branch is safeguarded by its own circuit breaker or fuse and supplies power to a group of outlets. Rather than measuring only the total power entering the PDU, branch circuit monitoring measures each protected […]
Why AI racks require a different type of PDU? GPU servers behave very differently from traditional IT equipment. Large AI training models generate rapidly changing workloads, causing significant fluctuations in power consumption within milliseconds. Multiple GPUs can simultaneously demand maximum power, creating electrical loads rarely seen in conventional enterprise environments. A modern GPU PDU must […]
Why Traditional Monitoring Is No Longer Enough? Not long ago, many enterprise racks consumed between 3 and 8 kW of power. Capacity planning was relatively straightforward and energy costs represented a manageable portion of operational expenditure. That reality has changed dramatically. AI clusters, high-performance computing environments and modern cloud infrastructure are pushing rack densities to […]
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