Topic guide
Explore sources on rack layouts, power density and IT equipment interfaces. Review technical notes to understand how mechanical, electrical and cooling requirements meet at the rack level.
97–120 / 191
Legrand 2015
For A/B rack feeds, check that the sum of both feeds' peak load stays below 80 % of one branch breaker (failover check) and warn when only average load is entered.
Open Compute Project Foundation 2025
Give power shelf catalogue items N+0 and N+1 kW ratings, hold-up time, BBU runtime and allowed peak and pulse-load factors.
Energies (MDPI AG) 2026
In in-cabinet liquid cooling, place high-load servers near the supply side; locating a 1.2 kW server at the bottom cut total power by 34.4%.
Open Compute Project Foundation 2022
Model AALC (RPU plus door or rack liquid-to-air heat exchanger) as a cooling option for air-cooled halls, counting the RPU's 4RU space, 75 kg mass and the 2%/5% parasitic power caps against rack U-space, weight and power budgets.
IEEE Access (Institute of Electrical and Electronics Engineers (IEEE)) 2026
Define 800 VDC unipolar, ±400 VDC bipolar and 48/54 VDC busbar as separate voltage classes in the single-line diagram, each with its own conductor ampacity, breaker pole count and clearance (IEC 60664-1) checks.
arXiv preprint (cs.DC) 2024
Add an embodied-carbon estimator per server SKU using the SCARIF linear model (5.01 kg per CPU core, 0.16 kg/GB SSD, 0.04 kg/GB HDD, 0.95 kg/GB DRAM, 83.08 kg x (year-2000), intercept -1100), and tag the result as an approximate, vendor-calibrated value.
Uptime Institute Intelligence 2022
Plan for lower supply temperatures, H1-class rooms or liquid cooling when high-TDP servers are selected.
Energies (MDPI AG) 2023
Select the two-phase immersion fluid by boiling point: it must boil below the 85 °C chip limit but not boil continuously at idle and raise condenser pump energy (HFE-7100 was chosen).
Schneider Electric 2019
Provide an edge/micro data centre template: single-rack bundle of rack, UPS, rack PDU, cooling (passive default), sensors and cameras.
Schneider Electric 2017
Make the pod a first-class object between room and rack, with feed power, input voltage, feeder breaker, feed redundancy, UPS location and rack count.
IEEE Open Journal of Power Electronics (Institute of Electrical and Electronics Engineers (IEEE)) 2026
In rack power templates, model PSU count per shelf and the 33 kW shelf limit for AC distribution, and check busbar, PDU and cooling impact together for racks that exceed 100 kW with several shelves.
ASHRAE 2008
Add floor-loading and seismic anchorage checks for racks to the design checklist, especially for AI racks of 1 t or more.
Proceedings of the 2023 ACM Symposium on Cloud Computing (ACM) 2023
Consider a GPU power cap (for example 60% of peak) as a control in capacity and cooling planning: about 10 W per job and a 4.78 °C lower mean temperature were reported.
arXiv preprint (Microsoft Azure Research / University of Illinois) 2025
Couple thermal and power headroom in the design tool: show how inlet temperature rise with outdoor conditions (for economiser or adiabatic systems) erodes GPU thermal margin and can trigger throttling.
Swiss Federal Office of Energy SFOE (Energy Research and Cleantech); preprint on arXiv 2025
Add an IT-side penalty of about 0.3-0.6% of IT power per C of inlet rise above about 23 C (a configurable default) to the setpoint optimiser and energy calculator, and model fan power with the cube of speed.
Schneider Electric 2015
Set density warnings by air-distribution type: uncontained flooded return above 3 kW/rack average, uncontained raised floor above 3-6 kW/rack, fan-assisted retrofit ceiling 8 kW/rack, HACS/RACS pods up to 60 kW/rack.
Vertiv 2023
For edge and closet designs, default the single-phase UPS battery to Li-ion where room temperature is uncontrolled, and show replacement cycles in lifecycle cost (VRLA 3-5 y, Li-ion 8-10 y).
Schneider Electric 2020
Model each white-space zone with supplyMode and returnMode enums (flooded, targeted, contained).
ACM SIGEnergy Energy Informatics Review (Association for Computing Machinery (ACM)) 2023
In the storage catalogue, store embodied carbon per drive SKU: a default of 0.16 kgCO2e/GB for SSD (Tannu and Nair SEF) and a much lower HDD default.
BICSI ICT Today 2026
Catalogue GPU cabinets with depth and 'rearAccess' flags and require front patching zones.
arXiv preprint (University of Alberta) 2024
Define AI load not only by energy but by peak/average (about 1 in training), peak/idle ratio and ramp/decline rates; make sub-second dynamics inputs for UPS, generator and grid-connection studies.
Schneider Electric 2017
Add passive and active ducted racks and ducted HACS to the containment selector, with density limits tied to a ceiling plenum vacuum input (default 0.03 inH2O / 7.5 Pa, warning above 0.06 inH2O / 15 Pa).
Schneider Electric 2020
Add an environmentClass (it_space, commercial_office, industrial_harsh) plus indoor/outdoor flag that drives defaults and checks.
U.S. Environmental Protection Agency (ENERGY STAR) 2023
Make a blanking-panel and gap-filler check a required step in colocation cage and rack layouts, and flag unused rack units.
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