
When data center outages happen, it’s always a nightmare for operators. Not only does it possibly mean losing thousands of dollars for businesses (possibly millions for giant tech companies), but it could also mean hardware failure, translating to additional expense and resources!
Understanding why your data center experiences outages is the first step to preventing them. In this article, we’ll discuss typical data center outage causes and some proven approaches to minimize or eliminate them completely.
Key Takeaways
By the end of this article, you’ll know:
- How outage causes are varied and interconnected.
- How redundancy is critical for resilience.
- How proactive prevention is more effective than reactive fixes.

Common Causes of Data Center Outages
Data center outages are, unfortunately, widespread. Almost one-third of data center operators reported having experienced an IT downtime incident or severe service degradation in their first year of operations. Here are the most common culprits:
Power Failures
Power outages in data centers are one of the top reasons data centers fail. Whether it’s a utility outage or a problem with backup generators, losing power can halt operations instantly.
According to a research report 2018 by the Uptime Institute, power failures account for 36% of the biggest global public service outages. This statistic is further reinforced by their new survey in 2023, stating that over 55% of operators have experienced a data center outage in the last three years.
Human Error
Mistakes happen. Maybe someone accidentally unplugs a network cable or power cable or misconfigures a system. Human errors account for a significant portion of data center outages.
In Uptime Institute’s 2023 Outage Analysis, human errors contribute to two-thirds to four-fifths of all incidents. Data center technicians failing to follow procedures, faulty procedures created by managers and engineers, and other human-related errors are highlighted as major contributors.
Network Issues
Network glitches, like faulty switches or routers, can instantly disconnect your data center from the world. Even the most powerful servers can’t do their job without network access.
Configuration and change management failures and issues with third-party network providers are some of the most frequent causes of network-related outages. Modern networking environments’ increasing complexity and dynamic nature are seen as contributing factors to these failures.
Network hardware and software upgrades are another common issue relating to network systems in data centers. These often lead to incompatibility issues when installed or misconfigured.
Software/Cybersecurity Attacks
There’s a thin line between network and general software, but when we say software, it’s about programs or systems that run the operations in general – disregarding hardware.
Software errors can be caused by bugs, misconfigurations, or human error. IT/software issues account for about 20 percent of major public outages. Hackers can also bring down data centers with DDoS attacks or malware. A security breach can not only cause downtime but also compromise sensitive data.
Poor Cable Management Leading to Heat Build-Up – Cooling Issues
It might not seem like a big deal, but messy cables can block airflow. This leads to heat build-up, which stresses equipment and increases the risk of failure.
When the devices and equipment are left to endure high heat levels, they become more prone to failure. They may work fine for the first few months, but eventually, some will fail. This leads to unnecessary outages. In fact, up to 13 percent of all data center outages are due to cooling issues.

How to Prevent Unplanned Data Center Outages
Here are the most effective solutions to preventing data center outages. They may seem costly and require considerable resources to implement, but rest assured, they’re an investment that pays off.
Power Outage Prevention
Invest in redundant power infrastructure, including uninterruptible power supply (UPS) systems and backup generators, to ensure continuous power availability even during utility failures or equipment malfunctions.
Once power backups are in place, managers and engineers should implement a rigorous maintenance schedule for all power infrastructure components, including batteries, generators, and transfer switches. Regular testing ensures that these systems will function as intended when needed.
Continuously monitor power systems for any anomalies or potential issues. Implementing monitoring systems with early warning capabilities can help prevent outages by enabling timely intervention.
If your organization has the means, one of the most powerful solutions to power outages in data centers is to invest in a data center microgrid.
Human Error Prevention
Establish clear, well-documented processes and procedures for all data center operations. This includes detailed instructions for routine tasks, incident response protocols, and emergency procedures. Use simple and concise language to ensure everyone understands your standard operating procedures (SOPs).
Invest in comprehensive training programs to ensure your data center staff are well-versed in operational procedures and safety protocols. Regular training updates and refresher courses can help maintain staff competency and awareness.
Foster a culture of accountability within the data center team. Encouraging staff to report errors and near misses without fear of reprisal can help identify areas for improvement and prevent future incidents.

Network Failure Prevention
Employ redundant network components, such as routers, switches, and network connections, to ensure network availability even if a single point of failure occurs. Diverse routing paths and multiple network providers can further enhance resilience.
Implement stringent change management processes for all network configurations and updates. Testing changes in a controlled environment before deployment can help prevent configuration errors and minimize the risk of outages.
Enforce robust security measures to protect network infrastructure from cyberattacks. This includes firewalls, intrusion detection systems, and regular security audits to identify and address vulnerabilities.
On the physical side, your data center should also implement Physical Layer Environment Network Security Monitoring and Control. This offers complete visibility, network security, and control of your physical layer environment.
IT System and Software Error Prevention
Conduct thorough testing of all software and IT system changes before implementation. This includes testing in staging environments that closely mirror the production environment to identify and resolve potential issues before they affect live systems.
Implement rigorous change management practices for all IT systems and software deployments. Documenting changes, using version control systems, and establishing rollback procedures can help mitigate the risks associated with software updates and configuration changes.
Never skimp on security measures to protect IT systems and software from vulnerabilities and cyberattacks. Regularly patch systems, use strong passwords and employ access controls to minimize security risks.
Prevent Cooling Issues With Proper Cable Management
You might underestimate the importance of good cable management, but it’s crucial for preventing heat-related outages. Properly managed cables allow for better airflow, keeping equipment cool and functioning optimally.
Our intelligently designed cable management racks are superior to traditional cable managers. In this video, we showcase how we unlock both optimal airflow and high-density configurations simultaneously.
Taking Action Now Is the Ultimate Data Center Outages Prevention
Don’t wait for disaster to strike. Take proactive steps to prevent data center outages. A well-maintained and properly designed facility is your first line of defense.
And when it comes to cable management, consider AnD Cable Products. Our data center rack management solutions can help you optimize airflow, reduce clutter, and prevent heat-related outages.
By addressing these common causes and implementing proven prevention methods, you can significantly reduce the risk of data center outages and ensure the continued operation of your critical business systems.
FAQs
What are the main causes of data center outages?
–Power Failures: Power outages are a significant cause, with many operators experiencing them.
–Human Error: This accounts for a large percentage of incidents, often due to a lack of clear procedures or insufficient training.
–Network Issues: Glitches or failures in the network can lead to downtime.
–Software and Cybersecurity Attacks: Bugs in software or cyberattacks like DDoS attacks can cause major disruptions.
–Poor Cable Management: This can lead to overheating, which stresses equipment and contributes to outages.
How can power failures be prevented?
To prevent power-related outages, it is crucial to invest in redundant power infrastructure, such as Uninterruptible Power Supply (UPS) systems and backup generators. Regular maintenance and monitoring of these systems are also essential.
How can human error be reduced in a data center?
-Establishing clear, well-documented procedures.
-Providing comprehensive staff training.
-Fostering a culture of accountability among employees.
What are the best practices to prevent network-related issues?
-Using redundant network components.
-Implementing strict change management processes.
-Utilizing robust security measures.
How can proper cable management help prevent outages?
Proper cable management ensures optimal airflow within the data center, which helps to keep equipment cool. This prevents overheating, a common issue that can lead to hardware stress and failure.
About the Author

Louis established AnD Cable Products – Intelligently Designed Cable Management in 1989. Prior to this he enjoyed a 20+ year career with a leading global telecommunications company in a variety of senior data management positions. Louis is an enthusiastic inventor who designed, patented and brought to market his innovative Zero U cable management racks and Unitag cable labels, both of which have become industry-leading network cable management products. AnD Cable Products only offer products that are intelligently designed, increase efficiency, are durable and reliable, re-usable, easy to use or reduce equipment costs. He is the principal author of the Cable Management Blog, where you can find network cable management ideas, server rack cabling techniques and rack space saving tips, data center trends, latest innovations and more.
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