EXIN CDCS case studies
EXIN CDCS · Put your knowledge to work in context.
The requested EXIN CDCS certification page could not be retrieved for this profile: the source URL returned a "Page not found" response, and the only content available was a cookie-consent notice. No verifiable information about the credential's purpose, target audience, exam domains, question count, duration, passing score, fee, retake policy, or validity period is present in the permitted source. The EXIN CDCS case studies are 5 cases and about 5,639 words.
1Top-of-rack hot spots at the far end of a contained hall
A 500 m² colocation hall carries 380 kW of IT load across 22 racks in two rows with hot-aisle containment. Cooling comes from six chilled-water CRAH units rated 80 kW each, configured N+1, delivering air through a 450 mm underfloor plenum and 25%-open perforated tiles.
1,123 words, about 6 min2A Tier III claim undermined by single points of failure
An operator markets a 1,000 kW facility as Tier III, concurrently maintainable. A due-diligence review finds: a single 11 kV utility feed into one 2,000 kVA transformer; one 2,000 kVA diesel generator with 8 hours of on-site fuel and a single automatic transfer switch; two UPS systems (A and B) rated 600 kW each, each built from 200 kW modules with three modules installed; and a cooling plant of two 400 kW chillers, two pumps and two cooling towers arranged as a single N system with manual changeover valves.
1,107 words, about 6 min3A 180 kW contract approved without a capacity study
A colocation provider operates a 1.2 MW hall that is 78% utilised at rack level. A sales team closes a 180 kW contract with a research customer whose racks draw 30 kW each, well above the hall's design average of 12 kW per rack.
1,075 words, about 5 min4Access control audit failures in a multi-tenant colocation hall
A 4,000 m² colocation facility hosts 11 tenants in cages and private suites and employs 38 staff on a 24/7 rota. Access is through a two-door mantrap with anti-passback and a biometric reader; CCTV comprises 22 cameras at 1080p with motion-based recording.
1,106 words, about 6 min5Level 5 integrated systems test with mixed results
A newly built 1.2 MW data centre is completing Level 5 integrated systems testing before handover. The commissioning agent's draft report contains six findings: (1) a UPS battery discharge test at 80% load delivered 7 min 10 s against a design requirement of 10 minutes at full load; (2) a generator block-load test applying 65% of rated load in one step, producing a 9% voltage dip, a frequency dip to 58.2 Hz on a 60 Hz system, and recovery within 4 seconds; (3) a total transfer time of 14 seconds from utility loss to generator supply at the UPS input; (4) the chilled-water system reaching design supply temperature 38 minutes after a cold start; (5) 6 of 40 environmental sensors failing calibration checks; (6) one of eight CRAH units failing to restart automatically after a simulated power restoration, requiring a manual reset at the local panel.
1,228 words, about 6 min