Data center fires don’t occur every day, but they have a major impact when they do happen. In May 2025, a fire at a data center in Hillsboro, Oregon burned for five hours, resulting in a significant outage for social media platform X. Just a few years before, a fire raged at an OVHcloud data center in Strasbourg, France, disrupting millions of websites.
Beyond posing a safety hazard, a data center fire can damage valuable equipment, cause data loss, and disrupt operations for businesses, government offices, and healthcare facilities. Fortunately, organizations that understand the biggest data center fire risks can take essential steps to prevent them, including installing a reliable fire alarm system.
Why Data Centers Are Vulnerable to Fires
A fire can start in virtually any type of indoor space, but data centers have a few key characteristics that elevate their risk levels. The first factor at play is the amount of equipment they contain, including servers, storage systems, routers, and backup generators. In certain circumstances, these types of equipment can generate enough heat to ignite a fire.
Most data centers also have plenty of combustible materials, which can serve as fuel if a spark or flame is present. Cabling, paper documents, cardboard boxes, and even typical office furniture can catch fire when the conditions are right. The combination of potential heat sources and ample fuel is a serious hazard if organizations don’t take the proper precautions to prevent fires.
Frequent Causes of Data Center Fires
Fires can break out for unusual and unexpected reasons, but more often they occur due to a few common issues. While some issues are impossible to predict and are outside of human control, many are avoidable when the right safety practices are in place.
Electrical Fires
Electrical failures and malfunctions are one of the leading causes of fires in industrial buildings as a whole, and that same pattern holds true for data centers. These facilities rely heavily on electrical equipment and wiring, increasing the chances of a failure. Fires often happen when circuits overload, equipment breaks down, or wiring is defective.
Overheating Equipment
If data center equipment has inadequate cooling or poor airflow, it can generate excess heat. In some cases, they can get hot enough to ignite nearby flammable materials. Paper, cardboard, and other combustibles may begin to burn, creating a cycle where the temperature rises unchecked.
Lithium-ion Batteries
Many data centers use lithium-ion batteries for backup power because of their long lifespan and high energy density. If these batteries overheat or get damaged, the temperature can rapidly rise. If they aren’t removed or replaced, they can ignite or explode, potentially spreading fire to other battery packs and equipment.
Inadequate Maintenance
Failing to regularly clean and maintain data center components, including servers, cooling systems, and power supplies, is another frequent cause of fires. When dust accumulates on these surfaces, it can cause dangerous overheating or short circuits. Neglected heating, ventilation, and cooling (HVAC) systems are another possible origin of a fire.
Human Error
Even seemingly minor mistakes by data center employees and third-party contractors can cause a fire to start or escalate. Some of the most frequent errors include improperly installing a battery, incorrectly connecting cables, or ignoring safety protocols for equipment clearance. While they may not have immediate consequences, these oversights can have disastrous results over time.
Fire Prevention Strategies for Data Centers
With data, business operations, and human lives at stake, fire protection in data center facilities is essential. The good news is that it’s relatively easy to achieve if organizations follow a few core safety practices.
Use Fire Detection and Suppression
Installing a data center fire alarm system is top priority if you want to detect and put out fires as quickly as possible. An effective fire alarm system will continuously sample the air to identify smoke or flames and alert you to their presence so you can initiate emergency evacuations. Some alarm systems automatically notify the fire department if the alarm is triggered, allowing emergency response teams to get to the scene quickly and put out the blaze before it spreads.
A fire protection system in data center environments should also include fire suppression solutions. Mist systems use a spray of fine water droplets to extinguish the flames, while a clean agent system uses a special substance that’s less likely to damage equipment.
Perform Regular Maintenance and Inspections
Data centers should also regularly test, clean, repair, and replace equipment and electrical systems. This includes testing fire alarm systems to verify they’re working properly and inspecting electrical systems and equipment.
Frayed wires, loose connections, and devices that feel or register as overly hot are all red flags. Noticing these kinds of flaws, defects, and damage in their early stages gives you the opportunity to address them before they cause bigger problems.
Control Temperature and Humidity Levels
Fluctuating or uncontrolled room temperatures and humidity levels can wreak havoc on a data center. If a room is too warm or the humidity is too low, equipment is more likely to overheat, and combustible materials become drier and more likely to catch fire.
Maintaining your HVAC system helps keep these levels in check. You can also go a step further by installing sensors to detect rising or dropping humidity, which keeps you better informed about the conditions within your data center.
Keep Things Clean
Fires can only burn if both heat and fuel are present, and frequent cleaning minimizes both. Removing dust and debris from equipment and ventilation systems prevents airflow restrictions, which can cause overheating and other issues. In addition, you can reduce the amount of fuel by discarding clutter, keeping paper-based products away from equipment, and prohibiting employees from bringing certain combustible materials into the space.
Train Employees
Most people remember to stop, drop, and roll if they catch on fire, but they might not be as familiar with the best prevention strategies. Educating employees about what they can do to limit fire hazards, particularly in the context of a data center, helps ensure everyone behaves more responsibly.
Require employees to participate in fire safety training sessions at least once a year. This training should address topics such as:
- Safety guidelines
- Proper equipment handling
- Fire risks specific to data centers
- Emergency response protocols, including how to use fire extinguishers
- Evacuation procedures
Training should also include periodic drills and simulations, allowing employees to put what they’ve learned into practice.
Protect Your Data Center From Disaster
A data center fire can threaten an organization’s employees, financial stability, and reputation, and there are multiple reasons one could break out. However, with the right safety measures and a trusted fire alarm system, data centers can remain safe and secure.
The team at 2 Krew Security and Surveillance has extensive experience in data center fire alarm installation in PA, specifically in the Pittsburgh and Tri-State area. We offer comprehensive systems tailored to your data center’s unique needs.
Contact 2 Krew for a consultation or to learn more about customized fire alarm systems for data centers and other spaces.
