What is server monitoring?

If you want to monitor servers, you need a clear structure for handling the individual tasks.

However, manually monitoring servers is extremely tedious, as it requires a significant amount of time and effort. Identifying performance issues this way offers plenty of space to human errors and delays incident detection and response time.

Server monitoring software automates the collection of system data across your entire IT infrastructure, giving IT teams a clear overview of their server environment. This allows them to quickly identify when metrics exceed or fall below threshold values, enabling the direct identification and contextual evaluation of server and security issues.

A server monitoring solution automatically notifies you of any critical system errors, allowing IT teams to act quickly. Continuous monitoring of server status helps prevent unexpected problems by providing instant alerts. Regular server health monitoring helps to avoid potential issues and ensures prompt notifications.

System administrators need server monitoring solutions to support their complex tasks, as manual server monitoring is too labor-intensive and risky.

With customizable alerts, teams can set tailored notifications for specific server or application issues, ensuring prompt responses to critical events. Monitoring tools help identify and resolve server issues before they escalate and cause unplanned downtime, ensuring high availability and minimizing disruptions.

The server monitoring tool used should alert the responsible system administrator if an error or problem occurs so that they can react immediately. Proactive issue resolution is essential for addressing potential failures before they impact users, ensuring higher system reliability and minimizing emergency interventions.

Once the right people are informed, the appropriate procedures should be applied. This includes approaching the department or professionals that should identify a solution.

When using server monitoring tools, it is also possible to predict developments based on historical data and anticipate possible bottlenecks in the future, for example in storage capacities, and take appropriate countermeasures.

Server management includes server monitoring but is not limited to it. Server management also covers updating applications, security patch applications, installing a new physical device, and correcting and eliminating problems. Moreover, it may also provide sufficient system resources for day-to-day requirements, like planning service capacities.

Both closed source and open source monitoring systems are available. As with any other software, monitoring systems also come in the usual variations:

This monitoring solution is installed on a separate system or as a hardware appliance in the IT infrastructure. Depending on the server monitoring tool and the devices to be monitored, the configuration effort can vary. 

In addition, with an on-premises solution, you retain control over your data, since it is also stored on-site.

In contrast to the on-premises option, some server monitoring tools can be obtained as a service. In this case, configuration and administration are usually managed via a web interface. Since no software has to be installed on the company's server infrastructure, the installation is often relatively quick.

The advantage of the SaaS variant is that these are usually good for monitoring cloud and microservice infrastructures and are distributed via a subscription, which can also be flexibly canceled.

What features must the best server monitoring tool have?

For the monitoring tool to get the data it needs, it must be able to retrieve it from the server. Therefore, it is necessary that the solution supports all commonly used operating systems and monitors all services. Furthermore, the solution must support both virtual and on-premises systems.

Broad coverage is especially important for large enterprises with complex, diverse infrastructures, as it ensures effective monitoring of all devices and services at scale.

Another point is easily configurable alarm management. This includes the setting of sensible thresholds and the method of notification should an error or warning occur.

For a server to function, several areas interact: the hardware and operating system layers, as well as the application layer. A good monitoring tool not only indicates that a problem is occurring but also offers the possibility of viewing the problem in context, in which it represents certain dependencies, for example.

The true value of a solution is directly related to its usability. For a monitoring solution, it is important that the monitoring software is easy to use and also provides powerful dashboards for visualizing the monitoring data. This makes it possible to see all important areas of a server at a glance and to react immediately to errors or problems.

Not only that — centralizing and correlating data from the entire IT environment in easy-to-read, unified dashboards provides end-to-end visibility and helps speed up problem resolution, even at the server level. As we have always maintained, effective monitoring requires a holistic approach that accounts for all significant relationships within an IT infrastructure.

Support is an important issue, especially in the enterprise field. Therefore, in the decision-making process, you should always check how easy it is to contact support in the event of problems.

Security orchestration should be taken into account, as it is important to ensure that measures are taken to prevent challenges like data loss or cybersecurity threats.

All servers can be monitored, whether they are Windows servers, Linux servers, or servers running any other OS, and whether they are located on-premises, off-premises, virtual servers, or any kind of cloud servers. When it comes to server infrastructure, organizations use resources like bare metal servers, virtualized servers, or servers in the cloud. All these may be monitored for full visibility, no matter where teams deploy services.

In practice, companies need to monitor multiple server types simultaneously, making a suitable server monitoring system essential. The priority for monitoring different server types depends on several factors. These include whether the server hosts critical applications, provides customer services, stores confidential data, requires high availability, handles heavy loads, or supports other servers hosting critical applications and services.

A company’s network may have thousands of IP addresses which are assigned through DHCP servers. IT administrators need to keep track of all of them to know how many exist, how many are in use and what IP ranges are utilized. DHCP server monitoring is crucial for keeping IP-centric networks safe and stable.

File servers are a standard part of every company's infrastructure. They allow employees to access shared files. Information may be exchanged in a computer network or via the Internet using protocols such as FTP, SFTP, or WebDAV.

Internal corporate data is frequently stored on file servers, which makes monitoring them essential for security reasons.

Admins set up alarms as part of file server monitoring to notify if an unauthorized IP address logs in to servers or if particular data is modified.

Print servers may be dedicated hardware servers or integrated into printers. Their purpose is to make printers available to the network's users. Although not a priority for many IT administrators, print server monitoring is extremely important as it ensures, for example, that all print jobs are being processed.

Most organizations nowadays rely heavily on mail servers, so mail server monitoring is extremely valuable. It ensures that the servers are functioning correctly, that the response time is in the agreed range, that emails are archived and backed up properly, and that information is transmitted encrypted. 

What is particularly valuable about mail server monitoring is that it enables IT administrators to be notified over another channel when mail servers are down.

NAS stands for Network Attached Storage, describing storage that is connected to a network and available to users on the network with the right credentials. NAS functions, in most cases, on dedicated hardware servers, and these are often user-friendly and easy to set up as an alternative to file servers. 

Storage devices are an incredibly important network component. Monitoring NAS servers allows you to check the health, utilization, and performance of your NAS devices. This enables your system administrators to proactively add additional storage before capacity is reached and performance suffers, or to prevent any other types of issues before they occur.

Server monitoring becomes far more effective when it’s built on a solid foundation. Before diving into metrics and alerts, it’s important to understand your environment, identify key data sources, and establish processes that support ongoing visibility.

Components like storage, network, hardware, and core services all have a direct impact on how well a server runs. Keeping these layers in check helps you catch hidden issues — such as network bottlenecks, failing disks, or unexpected configuration changes — before they turn into bigger problems at the server level. That’s why effective server monitoring is much easier when it’s paired with a holistic approach that takes broader infrastructure monitoring into account.

The steps below outline how to set up monitoring in a way that is both scalable and easy to maintain.

Effective server monitoring begins with understanding the environment and defining what needs attention. Organizations should evaluate their infrastructure to identify priorities such as server roles, network characteristics, vulnerabilities, and key stakeholders. This assessment determines which systems are mission-critical and how monitoring should be prioritized.

• Monitoring data may originate from several sources, depending on the setup:
• Operating systems (Windows, Linux, etc.)
• Hardware interfaces such as IPMI or SNMP
• Hypervisors
• Cloud provider APIs

Using a platform that consolidates these inputs ensures complete and consistent visibility.

Once the landscape is clear, the next step is identifying which metrics matter most. Monitoring should include essential hardware indicators — CPU, memory, storage, and network activity — as well as OS- and application-specific metrics. Tools that automatically discover relevant server metrics help tailor the monitoring setup without heavy manual effort.

Configuring alerts and thresholds is equally important. Default thresholds provide a starting point, but fine-tuning them prevents alert fatigue and ensures that only relevant issues trigger notifications.

Server monitoring is only effective when supported by clear operational processes. Teams need a defined approach for who receives alerts, how issues are acknowledged, and when escalation is needed. Testing these workflows ensures that notifications and escalation rules behave as expected before going live.

Monitoring your servers alone isn’t enough — to truly understand their performance, you also need to gain visibility into the infrastructure that supports them. Maintaining an accurate inventory helps track changes, detect faulty components, and identify unexpected configuration shifts. This continuous visibility is essential for avoiding blind spots.

IT teams should also monitor hardware health, such as CPU and RAM usage or temperature, because these indicators often reveal early signs of overload or failing components. Beyond server environments, keeping an eye on storage systems, network devices, and virtualization layers ensures you have a complete picture of your IT landscape.

All of this forms the basis for truly proactive monitoring.

Monitoring must remain active 24/7, especially because many automated tasks (such as backups or updates) run outside business hours. Identifying failures promptly prevents disruptions when the workday begins and allows faster recovery.