Topic guide
Explore references on reliability, availability and redundant architectures. Review failure models, maintenance arrangements and system dependencies while keeping the evidence, methods and scope of each publication in view.
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Türk Standardları Enstitüsü (TSE) Year not stated
If a reference list cites '2-6', check which published part is actually meant and compare it against 3-1.
U.S. DoD (UFC) 2023
Include transient and steady-state loads, transformer inrush, motor starting and UPS load in the generator sizing study, and calculate UPS charging load using the minimum charging current allowed while on generator.
U.S. DoD (UFC) 2019
Settle the loop or alternate-feed arrangement and the maintenance isolation points for the MV run from utility entry to the building early; the text treats shortening maintenance outages as a direct design driver.
POWER Magazine 2024
Use it as a negative test case: the app's Tier explanations must not hard-code availability percentages or equate Tier IV with '2N+1'
Uptime Institute 2026
Weight UPS, ATS/STS and generator failure modes highest in the reliability model
Uptime Institute 2025
Use PUE 1.54 as the 'industry average' line on the efficiency dashboard, year-stamped and user-overridable
Uptime Institute 2026
Make 30 kW/rack the threshold where the app moves from 'enhanced air' guidance to 'liquid-ready' guidance (rear-door heat exchanger / direct liquid cooling)
Uptime Institute 2026
Add a three-gate certification pathway to the project plan, starting with a TCDD-like design review before construction drawings freeze
Uptime Institute 2026
Model 'reliability.target' as an enum {TierI..TierIV} driving topology defaults: Tier I single path N; Tier II N+1 capacity components, single path; Tier III N+1 components AND two distribution paths (one may be passive), concurrently maintainable; Tier IV 2N or 2(N+1), two active physically compartmentalized paths and continuous cooling with UPS-backed pumps/fans.
Vertiv 2025
Seed an AI-hall wizard template with: compute rack 73 kW, support rack 14 kW, liquid fraction 0.78, power 4N/3, cooling N+1, mechanical UPS 2N.
Vertiv 2024
Provide a "2N AI hall" preset to compare with the 4N/3 preset: 2N makes installed UPS 200% of load against 133% for 4N/3; show the capex and efficiency deltas.
Vertiv 2025
Make the capacity block a first-class object: block = UPS group + PDUs + CDUs + chillers sized for N pods, so no power is stranded.
Vertiv 2025
Implement mechanical UPS sizing explicitly: mechUpsKw = sum of CDU pump kW + CRAH fan kW for every unit that must ride through; default about 20 kW per 1.35 MW CDU (roughly 1.5% of liquid load) and about 17 kW per CRAH.
Open Compute Project Foundation 2026
Fix the ESS architecture (DC or AC coupled, distributed or centralised, backup-only or grid-interactive), write the applicable NFPA 70, NFPA 855 and IEC 62933 parts into the design basis, and consult the authority having jurisdiction (AHJ) early.
Open Compute Project Foundation 2026
Choose cooling architecture against target rack power and each method's usable envelope: a 45 kW air ceiling (60-80 kW with rear doors), 120-250 kW class cold-plate racks, and the paper's anchor values for announced 600 kW-class racks.
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