Zero Client definition
A zero client is a type of endpoint that allows users to connect to a virtual or cloud-based desktop. Unlike regular desktop computers, zero clients don’t have an operating system or local storage. Instead, they depend on the server that hosts virtual desktops centrally, providing users with computing power and applications.
Essentially, zero clients function as devices that transmit user input to the server and then relay the server’s output back to be displayed on the monitor.
The key advantage of zero clients lies in their simplicity and lightweight design. Because they don’t have an operating system or local storage, zero clients need little to no maintenance. These devices are essentially plug-and-play, ensuring easy deployment and management. They are specifically tailored for virtual desktop environments.
Zero Client hardware
Zero clients are typically compact devices with a small form factor, enabling connection to a network. They can support various everyday use peripherals such as a display, keyboard, or mouse. They also have a range of connectors, like USB, HDMI, or Ethernet. Additionally, they may feature an audio jack. These devices are usually equipped with a processor and have minimal storage, relying mainly on firmware for their operation.
How does a Zero Client work?
The key to understanding how zero clients work lies in the concept of desktop virtualization. In a virtual desktop environment, the desktop operating system, applications, and data are hosted in the servers present in the datacenter. The zero client simply acts as an interface between the user and the virtual desktop present in the datacenter.
When a user logs on to a zero client, it establishes a connection to the datacenter where the virtual desktop is hosted. The server processes all the application requests and sends the display output back to the zero client. The zero client then displays the desktop environment on the connected monitor(s) as shown below.
Zero Client vs Thin Client
Thin clients have a lightweight operating system, minimal local storage, and some processing power, which allows them to run basic applications locally. They rely on the server for more resource-intensive tasks. On the other hand, zero clients do not have an operating system or local storage and therefore rely entirely on the server for all computing tasks.
Additionally, thin clients often require a bit more maintenance as they have an operating system that needs updates and security patches. Zero clients, with their simplified design, are generally easier to deploy and maintain.
In-depth reading: Differences between thin and zero clients
The below image summarizes the key differences between Zero & Thin Clients.
Pros of Zero Clients
- Lower total cost of ownership (TCO): Less maintenance, longer lifespan, and lower power consumption reduce overall costs.
- Enhanced security: No OS or local storage minimizes data breach risks and reduces attack surface; access can be restricted to specific virtual desktops or applications.
- Easier centralized management: A management console is generally provided for the management of zero clients, centralizing and simplifying updates and troubleshooting
- Seamless user experience: Users can access their virtual workspace from any device, allowing easy switching between devices without disruption.
Cons of Zero Clients
- Dependent on network: Functionality relies entirely on network connectivity; outages can lead to disruptions.
- Lack of flexibility and vendor lock-in: Often tied to specific vendors, limiting adaptability and potentially causing vendor lock-in.
- Performance limitations: Zero clients often face performance issues due to a lack of local processing resources. Modern VDI protocols now incorporate local processing to enhance performance and user experience.
- Compatibility restrictions: Some applications or peripherals may require additional configuration or may not be compatible.
Tip: For a detailed look at the benefits of thin and zero clients, check out our dedicated blog.
Where are zero clients used?
Zero clients find applications in various industries such as:
Healthcare:
Zero clients enhance the security of electronic medical records (EMRs) and other healthcare applications by not storing data locally. Staff members can securely access patient information from any room without carrying a laptop, ensuring patient privacy and streamlining workflow.
Education:
In classrooms and computer labs, zero clients provide reliable, easy-to-manage devices. Students can log in to their personalized virtual desktops from any device, preventing unauthorized software installation or changes and ensuring a secure learning environment.
Finance:
Zero clients strengthen data security, support legacy applications, and simplify disaster recovery for financial institutions. By eliminating local data storage, they reduce the complexity of compliance and recovery plans, while enhancing overall operational efficiency.
Related reading: Why thin clients are an ideal choice for financial institutions
Government:
Zero clients are popular in government settings due to their strong data security features. With no local data storage, these devices mitigate the risk of data breaches, ensuring sensitive information remains secure on central servers, even if endpoints are compromised.
These are just a few examples; zero clients are used in any environment that relies on VDI.
Are Zero Clients the best option for VDI?
Zero clients are now considered as an outdated technology with inherent performance issues due to their lack of local processing and minimal hardware. Initially created as a cost-effective solution for VDI access, they have become less viable as applications have grown more demanding, requiring basic hardware and processing power on the device itself. Modern VDI protocols now include local processing for improved performance and user experience, making zero clients a less suitable choice for future-proofing.
Best zero clients for VDI
If you need a solution similar to a zero client that boots directly into your virtual workspace, but with better performance, user experience, and future-proofing, try our thin client.
ZeeTim Endpoint is designed for accessing virtual desktops and serves as both a zero client and a thin client. It overcomes the limitations of traditional zero clients while maintaining high security. Our Thin Client supports multiple protocols and offers concurrent device licensing, so you only pay for the number of active users.
Access your VDI securely with our endpoints. Test our thin client free for 30 days.
Don’t need new hardware? Use our ZeeOS Operating System to convert your existing PCs into zero or thin clients, extending their lifespan by up to 10 years and cutting down on capital costs. Test ZeeOS today for free.
Learn more: 9 Frequently Asked Questions about Zero Clients