Case Study: The Cooling System Was Running — But the Data Hall Was Still Overheating
OverviewData center cooling systems are often designed with redundant cooling units, pumps, and power supplies.
Cooling and Environmental ControlArticles / Knowledge Base
Articles / Knowledge Base
60 results
Case Study: When Redundancy Was Not Enough — A Data Center Utility Power Failure
OverviewData centers are designed with multiple layers of redundancy to maintain critical IT services when individual components fail.
Data Center Electrical Systems
Best Practices for Data Center Network Rooms, Meet-Me Rooms, and Telecommunications Distribution Infrastructure
IntroductionThe telecommunications and network infrastructure of a data center is one of the facility’s most important availability systems.
Networking and Telecommunications
Rack Airflow Management for High-Density IT: A Comprehensive Data Center Engineering Guide
Long-form engineering article on Airflow and Containment, covering design, resilience, commissioning, operations, maintenance and lifecycle management.
Cooling and Environmental Control
Data Centre Fundamentals: How Critical Infrastructure Supports Digital Services
Comprehensive long-form Data Centre Fundamentals training article covering integrated critical infrastructure, resilience, power, cooling, operations, commissioning and lifecycle management.
Data Centre Fundamentals
Data Centre Electrical Fundamentals: From Utility Power to the IT Equipment
Comprehensive long-form Data Centre Fundamentals training article covering integrated critical infrastructure, resilience, power, cooling, operations, commissioning and lifecycle management.
Data Centre Fundamentals
Auditing Data Center Infrastructure: Building an Evidence-Based Audit Program
A practical guide to auditing data center infrastructure: building an evidence-based audit program, focused on evidence, risk, conformity, corrective action and data center resilience.
Auditing and Quality Assurance
Data Center Quality Assurance: From Design Review to Operational Acceptance
A practical guide to data center quality assurance: from design review to operational acceptance, focused on evidence, risk, conformity, corrective action and data center resilience.
Auditing and Quality Assurance
Audit Evidence and Nonconformities in Data Centers: From Observation to Corrective Action
A practical guide to audit evidence and nonconformities in data centers: from observation to corrective action, focused on evidence, risk, conformity, corrective action and data center resilience.
Auditing and Quality Assurance
Data Center Compliance Audits: Mapping Standards, Policies and Technical Requirements
A practical guide to data center compliance audits: mapping standards, policies and technical requirements, focused on evidence, risk, conformity, corrective action and data center resilience.
Auditing and Quality Assurance
Closing the Audit Loop: Root Cause, Corrective Action and Verification of Effectiveness
A practical guide to closing the audit loop: root cause, corrective action and verification of effectiveness, focused on evidence, risk, conformity, corrective action and data center resilience.
Auditing and Quality Assurance
Data Center Structured Cabling Architecture: From Meet-Me Room to Rack
A practical, standards-based guide to data center structured cabling architecture: from meet-me room to rack, focused on resilience, maintainability, testing and lifecycle management.
Business Continuity and Disaster Recovery
Fiber Optic Cabling in Data Centers: Single-Mode, Multimode, Polarity and Migration Planning
A practical, standards-based guide to fiber optic cabling in data centers: single-mode, multimode, polarity and migration planning, focused on resilience, maintainability, testing and lifecycle management.
Business Continuity and Disaster Recovery
Copper Cabling in Data Centers: Category Selection, Pathways and High-Speed Design
A practical, standards-based guide to copper cabling in data centers: category selection, pathways and high-speed design, focused on resilience, maintainability, testing and lifecycle management.
Business Continuity and Disaster Recovery
Cabling Pathways and Redundancy in Data Centers: Protecting A and B Communications Routes
A practical, standards-based guide to cabling pathways and redundancy in data centers: protecting a and b communications routes, focused on resilience, maintainability, testing and lifecycle management.
Business Continuity and Disaster Recovery
Testing and Commissioning Data Center Cabling: Certification, Labeling and Documentation
A practical, standards-based guide to testing and commissioning data center cabling: certification, labeling and documentation, focused on resilience, maintainability, testing and lifecycle management.
Business Continuity and Disaster Recovery
Data Center Commissioning Lifecycle: From Design Review to Integrated Systems Testing
A practical guide to the full data center commissioning lifecycle, covering design review, submittal review, installation verification, pre-functional checks, functional testing, integrated systems testing, issue management and handover.
Testing and Commissioning
Integrated Systems Testing for Data Centers: Proving Resilience Through Real Failure Scenarios
A practical guide to Integrated Systems Testing in data centers, covering scenario development, failure injection, safety controls, power and cooling interactions, monitoring, recovery criteria, evidence and operational participation.
Testing and Commissioning
FAT and SAT for Data Center Equipment: What to Test Before and After Delivery
A practical guide to Factory Acceptance Testing and Site Acceptance Testing for data center equipment, explaining scope, witnesses, test procedures, punch items, shipping risks, repeat tests and acceptance evidence.
Testing and Commissioning
Recommissioning Live Data Centers: Testing Existing Critical Infrastructure Without Creating an Outage
A practical guide to recommissioning operating data centers, covering baseline assessment, live-site risk, phased testing, maintenance windows, degraded redundancy, controls, documentation and recovery planning.
Testing and Commissioning
Data Center Operations Framework: Roles, Procedures, Shift Handover and Operational Discipline
A practical framework for professional data center operations, covering roles and responsibilities, standard operating procedures, shift handover, escalation, change control, documentation and continuous improvement.
Preventive and Corrective Maintenance
Preventive and Predictive Maintenance in Data Centers: Building a Risk-Based Maintenance Program
A practical guide to building a data center maintenance program using preventive, predictive and condition-based methods, asset criticality, maintenance windows, evidence, trend analysis and lifecycle planning.
Preventive and Corrective Maintenance
Commissioning BMS, EPMS and DCIM: Proving Monitoring, Alarms and System Integration
A structured commissioning guide for BMS, EPMS and DCIM in data centers, covering point-to-point testing, scaling, alarm logic, control sequences, timestamps, network failures, dashboards, integrations and integrated systems testing.
BMS, EPMS and DCIM
Clean Agent Fire Suppression in Data Centers: Design, Integrity and Operational Safety
An engineering guide to clean-agent fire suppression in data centers, covering agent selection, design concentration, enclosure integrity, release logic, alarms, ventilation interfaces, safety and post-discharge recovery.
Health, Safety and Environment
Pre-Action Sprinkler Systems in Data Centers: Why Water Protection Still Matters
A practical explanation of pre-action sprinkler systems for data centers, covering dry piping, detection interfaces, single- and double-interlock concepts, accidental discharge risk, inspection, testing and operational considerations.
Health, Safety and Environment
Commissioning Fire Detection and Suppression Systems in Data Centers
A structured commissioning guide for data center fire systems covering detectors, aspirating systems, fire alarm panels, clean-agent release, pre-action interfaces, cause-and-effect, room integrity and integrated testing.
Health, Safety and Environment
Very Early Smoke Detection in Data Centers: Aspirating Systems and Alarm Strategy
A practical guide to aspirating smoke detection in high-airflow data centers, covering sampling networks, alarm stages, detector zoning, maintenance, false-alarm control, cause-and-effect and commissioning.
Health, Safety and Environment
Fire Protection Strategy for Data Centers: Detection, Containment and Suppression
A practical overview of data center fire protection strategy, covering early detection, compartmentation, clean-agent systems, pre-action sprinklers, shutdown logic, emergency response and integrated testing.
Health, Safety and Environment
Airflow Management in Data Centers: Hot Aisles, Cold Aisles and Containment
A practical guide to airflow management in data centers, explaining hot-aisle and cold-aisle layouts, containment, recirculation, bypass air, rack inlet temperatures, blanking panels and operational verification.
Cooling and Environmental Control
Chilled-Water Cooling Architecture for Data Centers: Chillers, Pumps, CRAHs and Redundancy
An engineering guide to chilled-water cooling in data centers, covering chillers, pumps, heat exchangers, CRAHs, supply and return temperatures, hydraulic design, redundancy, controls and maintenance states.
Cooling and Environmental Control
Environmental Control in Data Centers: Temperature, Humidity, Dew Point and Sensor Strategy
A practical guide to environmental control for data centers, explaining temperature, humidity and dew point at IT inlets, ASHRAE equipment classes, sensor placement, alarm thresholds, trends and change control.
Cooling and Environmental Control
Commissioning Data Center Cooling Systems: Proving Capacity, Redundancy and Failure Response
A practical cooling commissioning guide covering pre-functional checks, CRAHs, chillers, pumps, controls, sensor calibration, load simulation, failure scenarios, recovery and integrated systems testing.
Cooling and Environmental Control
Data Center Electrical Distribution Architecture: From UPS Output to the IT Rack
A practical guide to data center electrical distribution from UPS output through switchboards, PDUs, RPPs, busways and rack PDUs, with emphasis on redundancy, selectivity, maintainability and failure domains.
Data Center Electrical Systems
Automatic Transfer Switches in Data Centers: Source Sensing, Transfer Modes and Failure Risks
A practical engineering guide to Automatic Transfer Switches in data centers, covering source sensing, open, delayed and closed transition, generator interaction, controls, bypass isolation, alarms and common failure modes.
Data Center Electrical Systems
Commissioning and Testing ATS, STS and Critical Switching Systems
A structured commissioning guide for ATS, STS and critical switching systems in data centers, covering inspection, source simulation, transfer timing, interlocks, bypass, alarms, failure scenarios and integrated system testing.
Data Center Electrical Systems
Static Transfer Switches in Data Centers: Protecting Single-Corded Critical Loads
A practical explanation of Static Transfer Switches for data centers, covering dual-source operation, fast solid-state transfer, source quality, synchronization, fault behavior, maintenance and use with single-corded equipment.
Data Center Electrical Systems
Switchgear Interlocking and Safe Switching in Data Centers
A practical guide to electrical interlocking and switching discipline in data centers, covering mechanical, electrical and key interlocks, switching procedures, LOTO, independent verification and human-error prevention.
Data Center Electrical Systems
Data Center Battery Technologies: VRLA and Lithium-Ion for UPS Energy Storage
Battery technology is a fundamental design decision in a data center UPS system. The battery must support the critical load immediately when the normal source is lost and remain dependable after long periods of standby operation. The role of.
Batteries and Energy Storage
Designing UPS Battery Autonomy: Runtime, Capacity, End-of-Life Margin and Real Load
UPS battery autonomy is often specified as a number of minutes, but reliable sizing begins by defining what those minutes must achieve. In a generator-backed data center, the battery is part of a continuity sequence involving source loss, UPS.
Batteries and Energy Storage
Battery Monitoring in Data Centers: Detecting Weak Strings Before They Become UPS Failures
A UPS can appear normal while its stored-energy system is slowly losing capability. The charger maintains the DC bus and no meaningful discharge may occur for months. Battery monitoring is valuable because it can reveal deterioration before the.
Batteries and Energy Storage
Lithium-Ion Battery Safety in Data Centers: BMS, Thermal Runaway and Fire-Risk Engineering
Lithium-ion batteries can provide strong performance for UPS applications, but safety must be evaluated at system level. Good engineering identifies hazards and applies layers of prevention, detection, protection and emergency response. .
Batteries and Energy Storage
Data Center Security Governance and Compliance: Building a Unified Control Framework
A practical framework for governing data center security and compliance across physical infrastructure, information security, operations, risk, ownership, evidence and continual improvement.
Security and Compliance
Security Incident Response in Data Centers: From Detection to Evidence Preservation and Recovery
A practical guide to responding to physical and cyber-physical security incidents in data centers, covering detection, command, containment, evidence preservation, communications, recovery and lessons learned.
Security and Compliance
Third-Party Security and Compliance in Data Centers: Managing Vendors, Contractors and Service Providers
A practical guide to third-party security for data centers, covering due diligence, contracts, remote and physical access, privileged support, evidence, monitoring, offboarding and supplier risk reviews.
Security and Compliance
Grounding, Bonding and Earthing in Data Centers: Safety, Fault Clearing and Equipment Reference
A practical guide to grounding, bonding and earthing in data centers, covering protective conductors, equipotential bonding, fault-clearing paths, racks, cable systems and verification.
Data Center Electrical Systems
Power Quality in Data Centers: Harmonics, Voltage Events, Surge Protection and Monitoring
An engineering guide to power quality in data centers, covering harmonics, voltage sags and swells, frequency, transients, surge protection, monitoring and troubleshooting.
Data Center Electrical Systems
Data Center Structured Cabling: Fiber, Copper, Pathways and Lifecycle Control
A standards-based guide to structured cabling in data centers, including fiber and copper selection, pathways, labeling, testing, documentation and lifecycle management.
Networking and Telecommunications
Monitoring Data Center Networks: Telemetry, Availability and Incident Evidence
A practical framework for monitoring data center networks using device health, interface telemetry, flow data, time synchronization, alerting and evidence-based incident analysis.
Networking and Telecommunications
Planning High-Speed Ethernet Migration in Data Centers: 100G, 400G and 800G
An engineering guide to planning higher-speed Ethernet migration, covering bandwidth demand, optics, fiber plant, breakout strategy, power, cooling, testing and staged deployment.
Networking and Telecommunications
Power Usage Effectiveness in Data Centers: Measuring and Improving PUE Correctly
A standards-based guide to measuring, interpreting and improving Power Usage Effectiveness (PUE) using consistent boundaries, metering and operational context.
Sustainability and Energy Efficiency
Energy Reuse in Data Centers: Understanding and Applying Energy Reuse Factor
A practical guide to Energy Reuse Factor (ERF), heat recovery, useful exported energy, measurement boundaries and resilience considerations.
Sustainability and Energy Efficiency
Cooling Efficiency Ratio in Data Centers: Measuring Cooling-System Energy Performance
A standards-based guide to Cooling Efficiency Ratio (CER), cooling-energy measurement, interpretation and improvement opportunities in data centers.
Sustainability and Energy Efficiency
IT Equipment Energy Efficiency and Utilization: Looking Beyond Facility PUE
A practical guide to server energy-efficiency and utilization KPIs, explaining why facility PUE alone cannot show how effectively IT capacity is being used.
Sustainability and Energy Efficiency
Managing Data Center Projects: Governance, Lifecycle and Decision Gates
A practical framework for governing data center projects through defined objectives, lifecycle stages, decision gates, accountability and controlled delivery.
Design and Project Management
Work Breakdown Structure and Interface Management for Data Center Projects
A practical guide to structuring data center project scope through WBS and controlling interfaces between civil, MEP, ICT, controls, security and commissioning workstreams.
Design and Project Management
Commissioning and Handover Planning in Data Center Projects: Start Before Construction Ends
How to integrate commissioning, documentation, training and operational readiness into the project plan from design through final acceptance.
Design and Project Management
Life-Cycle Costing for Data Centers: Looking Beyond Initial Purchase Price
How to evaluate data center infrastructure using lifecycle cost, including purchase, energy, maintenance, replacement, downtime exposure and end-of-life cost.
Financial and Economic Analysis
Human Factors in Data Center Operations: Designing Work to Reduce Error
A practical guide to reducing operational error in data centers through task design, procedures, supervision, verification and learning.
Human Factors and Organisational Culture
Competence Management for Data Center Teams: Skills, Authorization and Continuous Development
How to build a controlled competence framework for data center operators, engineers and technicians using role profiles, assessments, authorization and refresher training.
Human Factors and Organisational Culture
AI and High-Density Computing in Data Centers: Infrastructure Design for the Next Generation
In-depth educational article. AI and accelerated computing concentrate power, heat, bandwidth and weight into smaller footprints. Infrastructure must therefore be engineered as an integrated electrical, mechanical, network, structural and operational system.
Emerging Technologies and Future Trends