Data Center & Racks
OCP, ORv3, busbars, power shelves, CDUs and liquid cooling.
9 articlesCDUs Explained: Sizing Coolant Distribution for 50-200 kW AI Racks
A CDU is the pump, heat exchanger and control loop between your GPU cold plates and the building. Liquid-to-liquid versus liquid-to-air, in-rack, in-row and sidecar options, and why supply temperature…
Open Rack v3 (ORv3) Explained: Busbars, Power Shelves and 21-Inch Trays
ORv3 replaces per-server AC cords with a rack-level 48 V DC busbar fed by centralised power shelves, and adds blind-mate connections plus 21-inch tray support. What changes mechanically and electrically,…
Open Compute Project Explained: What OCP Means for AI Infrastructure Buyers
OCP is an open hardware standards community whose rack, power and cooling specifications now shape how high-density AI systems are built. What OCP is, which specifications matter for AI, and…
Liquid Cooling for Flagship Racks in India: CDUs and Water Quality
Direct liquid cooling is mandatory above roughly 50 kW per rack, and the part Indian operators underestimate is water chemistry: deionised or RO water with conductivity typically held below 5-10…
800 VDC Power: Preparing Training Halls for Megawatt AI Racks
Rack power went from about 40 kW in the Hopper era to roughly 120 kW with Blackwell, and 800 VDC distribution arrives with megawatt racks from 2027. This explains what…
Day-2 Operations for Rack-Scale AI: Failures, Monitoring and Service
Dense GPU systems fail as routine - Meta logged 419 interruptions in 54 days at 16k-GPU scale - so rack-scale readiness means DCGM-based trend monitoring, 30-60 minute checkpoint cadence, trained…
Hosting 100 kW Racks in India: Facility Readiness for Rack-Scale AI
A 120 kW NVL72-class rack exceeds most legacy Indian hall designs, so facility readiness is the long pole: direct-to-chip liquid cooling, 415 V high-amperage feeds, 2-tonne floor loading and contracted…
AI Factory Power and Cooling Checklist for GPU Clusters
When designing power and cooling systems for GPU clusters, consider factors like peak power consumption, redundancy, and cooling efficiency. The NVIDIA H200's 141 GB HBM3e memory in 2024 emphasizes the…
Air-Cooled vs Liquid-Cooled GPU Racks: When to Switch
Air cooling runs out of headroom at roughly 35 kW per rack. Below that, well-designed airflow is fine; above it, direct-to-chip liquid cooling becomes necessary, and beyond ~100 kW per…