Allison Maddox from Dell Technologies walks through a preview of the upcoming IR7000 integrated rack: a rack-scale platform that bundles compute sleds, a direct-liquid-cooled networking switch, an integrated rack controller, a power shelf, and a 4U rack cooling distribution unit (RCDU). The emphasis is on OV3/ORv3-style disaggregated power plus shared plumbing, so the rack becomes the repeatable building block for AI and HPC pods, rather than a one-off integration project. https://www.dell.com/en-us/shop/storage-servers-and-networking-for-business/sf/integrated-rack-scalable-systems
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A key engineering point is risk management for direct liquid cooling (DLC). Dell’s integrated rack controller is shown doing rack-level leak detection using a sensing rope routed through strategic zones, aiming to detect coolant escapes outside a node before they reach expensive GPUs, switches, or the power shelf. In practice this turns DLC from “pipes and hope” into instrumented infrastructure, with rack-scale telemetry, alarms, and clearer fault isolation for risk.
The OV3 mechanics are designed for serviceability at density: pulling a compute system out disconnects it from both the busbar and the coolant manifold, and pushing it back in blind-mate reconnects power and liquid without manual fittings. That matters when racks are delivered as tall, high-density assemblies (the full IR7000 racks on the booth floor are in the 44U–50U class), because maintenance time, connector wear, and human error quickly dominate uptime math at dock.
The cooling argument is straightforward thermodynamics: high-TDP CPUs and accelerator GPUs create heat flux that air cooling struggles to move efficiently, so cold plates and circulating fluid carry heat to a CDU/RCDU that pumps, conditions, and stabilizes the loop. The intended buyers—AI/HPC customers, cloud service providers, finance, and large enterprises—are looking for standardized rack patterns, predictable cooling envelopes, and operational controls that scale, which is why liquid cooling is so visible in this Supercomputing SC25 St. Louis walkthrough there.
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