DCSW study guide
DCSW · Work through your exam, one topic at a time.
DCSW stands for Data Center Subject Matter Expert Written, a credential aimed at professionals who design, build, operate, or audit mission-critical facilities and need to demonstrate broad, cross-discipline competence rather than narrow vendor or product knowledge. Candidates typically come from electrical or mechanical engineering, facilities operations, ICT infrastructure, commissioning, security, or risk and compliance roles, and are often moving into lead, consultant, or sign-off responsibilities where they must reason about trade-offs across the whole facility. The DCSW study guide has 8 sections and about 4,215 words.
01Data Center Design and Standards
Data Center Design and Standards tests whether you can turn a business availability requirement into a physical topology and defend it against a recognised standard. Expect questions comparing ANSI/TIA-942-B, ISO/IEC 22237 (which absorbed EN 50600), BICSI 002 and the Uptime Institute Tier scheme, plus classification of a described facility.
427 words, about 2 min02Electrical Systems and Power Distribution
Electrical Systems and Power Distribution covers the path from the utility service to the server power supply: medium-voltage switchgear, transformers, generators, ATS/STS, UPS, PDUs, busway, rack PDUs and the grounding system tying them together. Questions focus on topology, sizing arithmetic, failure modes and the maintenance operations that keep redundancy real.
479 words, about 2 min03Mechanical Systems
Mechanical Systems covers the heat-rejection chain: chillers, pumps, cooling towers, CRAH/CRAC units, piping, valves, economisers, controls and the redundancy schemes that connect them. The exam probes whether you can size a plant, identify the weakest link, and describe how maintenance is performed without losing cooling.
414 words, about 2 min04Cooling and Environmental Control
Cooling and Environmental Control tests the airflow and environmental envelope side of the facility: ASHRAE TC 9.9 recommended and allowable ranges, airflow management, containment, delta-T, humidity control, PUE and liquid cooling. Expect calculations using heat, airflow and temperature difference, plus questions on where recirculation and bypass destroy capacity.
451 words, about 2 min05ICT and Network Infrastructure
ICT and Network Infrastructure covers structured cabling, fibre and copper media, cross-connect hierarchy, carrier entry and diversity, cabinet layout and testing. The exam checks whether you know the distance and loss limits that decide whether a link will actually support the intended application, and whether the physical topology supports redundancy.
430 words, about 2 min06Fire Protection and Life Safety
Fire Protection and Life Safety tests detection, suppression, compartmentation and egress in spaces with high-value, continuously energised equipment. The governing references are NFPA 75 for IT equipment spaces, NFPA 76 for telecommunications facilities, NFPA 2001 for clean agents and NFPA 101 for life safety.
394 words, about 2 min07Security and Physical Access Control
Security and Physical Access Control tests layered defence of the facility and the evidence trail that proves it works. Expect questions on perimeter design, access control technology, anti-tailgating, video surveillance, visitor management, colocation cages and the standards that impose physical controls, notably ISO/IEC 27001 Annex A, PCI DSS Requirement 9 and SOC 2.
414 words, about 2 min08Operations, Maintenance and Commissioning
Operations, Maintenance and Commissioning tests how a facility is run and proven after it is built: procedural documentation, maintenance regimes, change control and the commissioning ladder from factory test to integrated systems test. Questions often present a scenario and ask which procedure or test level applies.
1,206 words, about 6 min