EXIN CDCE case studies

EXIN CDCE · Put your knowledge to work in context.

The EXIN Certified Data Centre Expert (CDCE) is a vendor-neutral credential in the EXIN data centre certification family, positioned above foundation and professional level. It is aimed at experienced data centre professionals - facility managers, design consultants, operations leads, and engineers moving into decision-making roles - who already understand the fundamentals and need to demonstrate judgement across design, operations, standards, and strategy. The EXIN CDCE case studies are 5 cases and about 3,054 words.

Phased cooling retrofit under a 900 kW growth mandate

A 480 m² white space operates six rows of 42U racks at 4.5 kW/rack average and 320 kW total IT load. The 2012 design assumed 600 kW, but eight 60 kW CRAC units are arranged 4+4 without containment; measured PUE is 1.85.

484 words, about 2 min 2

Generator load-test trip on a Tier III claim

At 02:10 a scheduled generator load test trips a 2,000 kVA generator on overcurrent after 38 seconds at 1,650 kW. The UPS transfers to battery and recovers; no customer load is lost.

667 words, about 3 min 3

Tier III and PCI DSS claims in a 6 MW colocation audit

A colocation provider markets a 6 MW hall as 'Tier III, fully concurrently maintainable'. The topology has 2N UPS and dual-corded customer racks, but cooling is N+1 CRAH units on a single chilled-water distribution loop with manual isolation valves; taking a CRAH out for maintenance requires local isolation, not concurrent maintenance of the loop.

669 words, about 3 min 4

Capacity strategy under a 4 MW utility cap

A 2.0 MW IT load data centre is at 62% of its 3.2 MW electrical design capacity; actual PUE is 1.58. Demand has grown 15% per year for three years, and sales forecasts the same for five more years.

630 words, about 3 min 5

Heatwave chiller loss and open containment

At 14:30 during a 41°C heatwave, a 600 kW IT hall loses one of three 350 kW chillers. The remaining two are at 95% load; chilled-water supply rises from 12°C to 17°C.

604 words, about 3 min