For data center operators, risk rarely starts and ends with one system or department. It could begin with a cut fence, an intruder moving toward a substation, an alarm that no one takes seriously, or a rack that quietly overheats overnight.
The trigger may differ, but the outcome is often similar, an interruption that can be extremely expensive. More than half of significant data center outages now cost companies more than $100,000, while roughly one in five exceed $1 million, according to the Uptime Institute’s 2024 Annual Outage Analysis.
Yet data center protection is often sold and managed in separate categories. Perimeter security is presented to the security director, substation monitoring is handled by facilities teams, and rack inspections are left to reliability engineers.
For a VP of Operations responsible for keeping the entire site online, those risks are not separate. A fence breach and an overheating rack may involve different teams, but both can threaten uptime.
Reliability goes beyond security
Perimeter detection, electrical monitoring, alarm management, and rack inspections all have the same objective, identify a developing problem early enough to prevent it from affecting operations.
A perimeter breach may initially be treated as a security incident. But if an intruder reaches a substation or other critical equipment, it becomes an operational issue almost immediately.
The impact will ultimately be measured in lost capacity, service disruption, and recovery time and not simply in the number of security alerts generated.
Bringing these controls into a coordinated program gives operators a more complete view of site-wide risk. It also reduces the gaps that can emerge when departments plan, purchase, and operate their systems independently.
Tracking risk from the fence inward
Data center campuses can extend across miles of dark, lightly staffed perimeter. In many cases, the limited lighting is intentional. Low-light designs help reduce light pollution for neighboring communities, but they also give conventional cameras less visual information to work with.
Thermal imaging can help close that gap by detecting the heat signatures of people and vehicles, even in complete darkness. Early detection is important because every additional step a potential threat takes into the site reduces the time available for operators to assess the situation and respond.
A layered security architecture may begin with a radar system such as the Flir R-190/R-290, which detects movement as it approaches or crosses the perimeter. The radar can work alongside bi-spectral FH-Series AI thermal and visible cameras, as well as bi-spectral Elara DX-Series thermal and visible PTZ cameras.
Together, these systems can verify activity and continue tracking it. Instead of relying on a single sensor or isolated alarm, operators receive multiple sources of information to help determine whether an incident requires action.
The detections can be brought into Flir Latitude VMS, giving control-room personnel a shared view of the event. Flir Nexus® connects the sensors and systems, helping ensure that information gathered at the perimeter reaches the people responsible for responding.
Substations are critical exposure points
Further inside the site, the substation represents one of the most important areas to monitor. It supplies power to the data halls, yet it is often less visible to operators than the equipment inside the building.
Fixed radiometric thermal cameras can continuously monitor transformers, electrical connections, and other energized equipment for abnormal temperature changes. A loose or deteriorating connection may be difficult to spot during a visual inspection, but it can produce excess heat long before the equipment fails.
That early warning gives operations teams the opportunity to investigate and schedule repairs during planned maintenance, rather than dealing with an unexpected failure and a potential outage.
Rack temperatures leave less room to react
Inside the data hall, the available response time is even shorter. GPU-dense racks can consume several times the power of traditional 8 kW to 12 kW racks, generating significantly more heat in a smaller area.
A cooling problem or component failure that develops gradually over several days can escalate within minutes under those conditions. Continuous monitoring and regular inspections are therefore becoming increasingly important as high-density computing expands.
Periodic handheld inspections remain valuable because they allow maintenance teams to examine assets from different angles and distances. Fixed thermal monitoring provides visibility between scheduled surveys, while handheld tools with route-based inspection capabilities, such as the Flir i65 and Assetlink software, support more detailed analysis, documentation, and follow-up when an issue is detected.
Onboard features such as reference imaging can make these inspections more repeatable and easier to track over time. That helps teams identify changes in thermal performance and make better-informed repair decisions.
When combined with safety equipment such as infrared windows, handheld inspections can also allow maintenance personnel to examine energized electrical equipment more safely.
Different budgets, same operational risk
Security and operations are frequently managed as separate functions, so teams may purchase thermal technology for different reasons. Security departments may invest in thermal cameras for perimeter protection, while operations teams deploy thermal equipment for electrical inspections, early fire detection, or rack monitoring.
The purchases may come from separate budgets because the organization is divided that way. The underlying risk is not.
Grand View Research valued the data center physical security market at $1.87 billion in 2023 and expects it to reach $4.83 billion by 2030. Mordor Intelligence projects that the thermal imaging systems market will grow from $5.78 billion in 2025 to $8.71 billion by 2031.
These figures describe different markets, but data center operators experience both as part of the same uptime challenge.
Whether the threat is an intruder near critical infrastructure or an overheating electrical connection, the goal is similar to identify the issue, provide enough information to act, and prevent a larger disruption.
Building a broader reliability program
Compliance requirements are also encouraging a more coordinated approach. The 2023 edition of NFPA 70B placed greater emphasis on documented electrical maintenance and thermographic inspections.
Inspection records, identified deficiencies, and corrective actions are increasingly becoming part of a facility’s wider maintenance and audit process rather than being handled informally or kept within a single department.
This does not mean operators need to replace systems that are already working. Instead, they should view perimeter protection, power monitoring, interior surveillance, rack conditions, and compliance as elements of one reliability program.
Flir supports that approach across the facility, from radar and thermal detection at the perimeter to radiometric monitoring of critical equipment inside the data center. Connecting those capabilities can give operators a clearer view of risk across the site and more time to respond before a developing condition becomes an outage.
