What Is a Network Operating System? All You Need To Know

Written by Holly Landis | Jan 2, 2025 7:27:05 AM

Even as a small business, you’re probably running multiple devices on at least one network. For larger enterprise organizations, there could be thousands of computers, printers, smartphones, and more, all connected to this network. 

So, how do all of these devices talk to each other and provide users access to the files, resources, and functions they need to do their jobs? The answer lies in network operating systems (NOS), the backbone of every business. 

Beyond managing this access, NOS ensures that network operations are both efficient and secure.

Typically, operating systems are used on an individual level for each device connected to the network. For instance, a computer and a tablet would both run their own OS but connect to the main company NOS. This allows the user to easily access shared files or information in the wider system.

Network operating systems (NOS) vs. operating systems (OS)

A network operating system is designed to manage and share resources held on the network across multiple devices at any time, providing a centralized system for management and optimization. Think of this as a “one-to-many” distribution system from the server to any device connected to the network.

A traditional operating system (OS), like Windows or macOS, operates in a similar way but for a single device, like a desktop or laptop, rather than the entire network. These systems manage files and hardware, along with running applications, on that individual device only. 

Where a NOS is “one-to-many,” an OS is “one-to-one.”

Types of network operating systems 

Every network server is configured to meet the unique needs of the business, but here are the two main types that every NOS falls into.

Peer-to-peer

All devices connected to a peer-to-peer network OS have the same level of access and equal functionality. Each device has its own local memory but can use the network OS to communicate and share resources with other devices on the network. 

For smaller teams with fewer than 25 devices on the network, this setup is ideal as it makes resources more accessible. Each device has the ability to manage other users on the network and other security systems for the OS. 

While this makes sharing resources faster and easier, it’s also a less secure setup since there’s no centralized management option when all devices are treated equally. If the server fails, the entire system is disrupted, which can cause significant delays in work productivity and even data loss.

Examples: Home networks, small office networks using software like Windows Homegroup.

Client/server 

On a client/server network OS, a single server connects to multiple devices. But, unlike peer-to-peer, these systems use the server to act as a centralized point from which all devices can then access individually based on their access level. 

Both the server and the client or user share the responsibility for accessing network resources, but the server keeps all the information, like files and databases. Users can send requests to access these resources on their own devices. 

For larger organizations or companies handling sensitive data, client/server NOS is more suitable. It offers better security and higher performance, and the server acts as a backup for any potentially lost data. 

Although the system is more expensive to set up and requires a trained administrator to manage it, the benefits outweigh the costs. 

Examples: Microsoft Windows Server, Linux distributions (like Red Hat Enterprise Linux, Ubuntu Server), Novell NetWare.

Key considerations 

  • Network Size and Complexity: Client-server is better suited for larger, more complex networks with many users and resources. Peer-to-peer is often more appropriate for smaller, simpler networks.
  • Security Requirements: If strong security is a priority, client-server models generally offer better control and enforcement.
  • Scalability: Client-server architectures are generally more scalable to accommodate growth in network size and user demands.

Key features and functions of a network operating system 

The specialized software that most NOS run has similar features that make sharing resources across the network easier for businesses and teams. While each NOS can be configured to suit the company setup and requirements, most, particularly those running on a client/server model, offer the same functionality.

User access management 

One of the most important features of a NOS is controlling who has access to different resources on the network. These settings are configured from a centralized administrative hub to maintain network security. 

For any business, the goal should be to allow authorized users access only to the files and applications needed to complete their work rather than giving every user the same level of access to every resource on the network. 

Resource sharing  

When multiple devices and users connect to the same network, they can easily share any resources hosted on the NOS like files, and applications, and even access other connected devices like printers or scanners. 

Sharing data and hardware across the network is essential for team collaboration and improving productivity company-wide while ensuring that any network resources are managed securely. Since NOSs can connect to devices remotely, information can be shared no matter where the devices are located - whether it’s in the same room or across the globe.

Network security 

With the growing risks of cyber threats, keeping networks secure should be a top priority for any business. Even with multiple devices connected to the operating system, these specialized tools come with a number of security features like user authentication, data encryption, and access control that administrators have responsibility for. These measures are the best ways to keep both data and users safe from unauthorized access.

$452 billion 

is expected to be lost in 2024 due to cybercrime in the US.

Source: Statista 

Network troubleshooting 

When issues come up on the network, the operating system has built-in troubleshooting functionality. Flagging to alert administrators is essential for minimizing downtime on the network while identifying problems and isolating them so that they can be fixed. For some common network operating system issues, there may also be features that provide automated fixes to keep everything running smoothly.

Scalability 

As your business grows and new team members join, the functions of your NOS will likely need to adapt with you. Ensuring your network operating system can scale when introducing a new NOS to your business.

A good NOS should be able to handle increased traffic, connect more devices, and manage additional resource storage, all without compromising network performance.

Load balancing 

Particularly at busy times or as your company expands, the network might experience large amounts of traffic or client-to-server requests. This can cause network congestion and make performance slower.

To avoid this, choose a NOS that can support load balancing, a feature that ascertains traffic can be redistributed across different servers to improve efficiency.

Data storage, backup, and recovery 

Losing data is expensive for every business and can be a significant disruption to your work. Many NOSs now come with backup and recovery functionality that help protect against possible data loss across the system, such as automated system backups at scheduled times throughout the day or week.

Recovery plans are important to map out, should data loss occur. Introducing additional storage solutions like network-attached storage (NAS) or storage area networks (SANs) can be useful for providing a home for server backups should the original network server fail.

Network operating system examples 

There are many NOS options available, each with similar functions. Finding the right one for your business will often come down to budget and specific features that you might be looking for. Some of the most popular examples of NOS’s are:

  • Microsoft Windows Server: This is generally considered to be the most widely used NOS in the world, thanks to Windows’ stability and focus on security. Enterprise-level businesses would benefit the most from this network operating system thanks to the extensive data storage options and application hosting this software provides.
  • UNIX: The first UNIX OS was developed in the 1960s, with many different types now available such as Oracle Solaris and IBM Advanced Interactive eXecutive. For businesses looking to connect desktops and laptops to web servers, UNIX is a good choice for an NOS.
  • Cisco Internetwork OS: Cisco is both a service provider and an NOS manufacturer, offering a range of network operating system technologies for businesses of all sizes. Enterprise companies needing more complex telecommunications software and routing tools may be better suited to a Cisco NOS as they integrate seamlessly across their product suite.
  • macOS Server: Apple's server operating system, designed for Apple environments, offering features like file sharing, web services, and user management.
  • Novell NetWare: A classic server operating system with a strong focus on network services and directory services.

Network operating system benefits 

Integrating a network operating system into your business comes with numerous benefits. Although the upfront cost will need to be accounted for, the lasting advantages of using these systems can significantly improve many aspects of your company and the day-to-day work of your team.

Enhanced security 

An NOS provides more comprehensive security features compared to other resource management and data storage alternatives. Protecting your most important and sensitive data is vital, and with tools like user authentication and data encryption, your network operating system can provide the security you’re looking for.

Improved team collaboration and efficiency 

With users able to access resources from their individual devices, team collaboration becomes much simpler. Sharing files and accessing common applications becomes efficient, which boosts overall team productivity across the company.

Centralized management 

A centralized management hub manages connected network devices, authorized users and their access levels, and resources held in network storage, making your network administrator’s job easier. By providing access to all of these elements from a single dashboard or interface, the time to manage and maintain these important pieces of the network is significantly reduced.

Cost savings 

Although there are upfront costs in setting up a new network operating system, the rewards that these systems can bring over the next several years can result in cost savings for the business. By improving your IT infrastructure, you can reduce overheads by optimizing multiple parts of your system at one time, reducing the need to duplicate or replace other software or hardware.

Network operating system challenges

A network operating system offer numerous benefits, but also comes with its own set of challenges:

  • Complexity: Setting up and configuring a network operating system can be complex, especially in larger networks. Sometimes, managing user accounts, permissions, and network resources can be time-consuming and may require specialized expertise.
  • Cost: A commercial network operating system (like Windows Server) often requires expensive licenses. Powerful servers and network infrastructure are necessary to support a robust NOS, and there may be some ongoing software update costs, or support costs.
  • Vendor Lock-in: Organizations that heavily rely on a specific NOS may find it difficult to switch to a different system due to compatibility issues and the cost of migration.

All systems go!

Network operating systems are the connecting force for millions of businesses, providing an efficient and secure way for teams to communicate digitally. Whether you’re working in a complex enterprise system or managing a smaller network, the right network operating system can make a big difference to your business.

Boost your business’s network security with network detection and response (NDR) software that alerts you to security threats and automates solutions.

Edited by Monishka Agrawal