What is a VPS? A beginner's guide
You're looking for hosting and keep running into the term VPS. But what is a VPS exactly? What is a VPS and how does it work? And is it something for you? In this article we explain in plain language what a Virtual Private Server is, how it works, and when you need a VPS. Whether you have a growing website, run a web application, or simply want more control over your server, after reading this article you'll know exactly whether a VPS is the right choice for you.
What is a VPS? Explained simply
The question "what is a VPS" comes up a lot. VPS stands for Virtual Private Server. A VPS is a piece of a physical server that behaves like a standalone server. You share the physical hardware with other users, but you have your own guaranteed resources (processor, memory, storage) and your own operating system. Nobody else has access to your part of the server.
Picture an apartment building. Shared hosting is like sharing a room with other people, you share everything. A VPS is like your own apartment in that building: you share the building (the physical server), but you have your own private space with your own keys, your own facilities and your own rules. A dedicated server is then a detached house: everything is yours, but it's also considerably more expensive.
How does virtualization work?
The technology behind a VPS is called virtualization. A powerful physical server is split into multiple virtual servers using special software (called a hypervisor). Each virtual server has its own operating system, its own processor cores, its own RAM, and its own disk space.
The two most widely used virtualization technologies are:
- KVM (Kernel-based Virtual Machine): Full virtualization. Each VPS runs a completely separate operating system. This is the most modern and reliable technology. Theory7 uses KVM for our VPS packages.
- OpenVZ/LXC: Container based virtualization. Lighter and more efficient, but all VPS instances share the same Linux kernel. Less flexible but cheaper.
The advantage of virtualization is that you get guaranteed resources. If another VPS on the same physical server is under heavy load, it has no effect on your VPS. This is a big difference from shared hosting, where a busy neighbor can slow down your entire website.
Technical specifications of a typical VPS
To give you an idea of what to expect from a VPS, here's an overview of typical specifications:
| Specification | Entry level VPS | Mid range VPS | High performance VPS |
|---|---|---|---|
| vCPU cores | 1-2 | 2-4 | 4-8+ |
| RAM | 1-2 GB | 4-8 GB | 16-32 GB |
| SSD storage | 20-40 GB | 80-160 GB | 320-640 GB |
| Bandwidth | 1-2 TB | 3-5 TB | 10+ TB |
| Price indication | €5-15/mo | €20-40/mo | €60-120/mo |
What is a VPS compared to shared hosting?
The difference between a VPS and shared hosting is one of the most frequently asked questions. Below are the main differences at a glance:
| Feature | Shared Hosting | VPS |
|---|---|---|
| Resources | Shared with others | Guaranteed for you |
| Root access | No | Yes (full control) |
| Operating system | Predetermined | Choose your own |
| Installing software | Limited | Anything possible |
| Performance | Variable (neighbor effect) | Consistent and predictable |
| Security | Basic (shared environment) | Better (isolated environment) |
| Scalability | Limited | Easy to scale up and down |
| Price | €3-10/mo | €5-100/mo |
| Technical knowledge | Not required | Basic to advanced |
In short: shared hosting is cheaper and easier, but a VPS offers more control, better performance and more security. For a detailed comparison, read our article on VPS vs shared hosting.
What is a VPS compared to a dedicated server?
A dedicated server is a full physical server that's exclusively yours. The difference with a VPS:
- Dedicated: All hardware is exclusively yours. Maximum performance, full control, but also the highest cost (€80-500+/mo).
- VPS: You share the physical hardware but have guaranteed resources. Good performance at lower cost.
For most projects, a VPS offers plenty of power. A dedicated server is only needed if you have extremely high traffic, run heavy databases, or have specific hardware requirements (such as GPU computing). Read more about this in our article on dedicated servers.
Benefits of a VPS: what is a VPS worth?
Why do so many website owners and developers choose a VPS? These are the main benefits:
1. Guaranteed resources
With a VPS, your CPU, RAM and disk space are guaranteed. Your website performs consistently, regardless of what other users on the same physical server are doing. This is essential for online stores, busy websites and applications where speed is critical.
2. Root access and full control
With root access you can install and configure anything you want. Your own software, custom configurations, specific PHP versions, Node.js, Python, Docker containers, the possibilities are endless. With shared hosting you're limited to what the hosting provider offers.
3. Scalability
You can easily scale up a VPS if you need more resources. Need more RAM? Extra CPU cores? A bigger disk? With most providers you can arrange this with a few clicks, often without downtime.
4. Better security
Because your VPS is fully isolated from other users, it's more secure than shared hosting. You can also set your own firewall rules, install security software and secure the operating system exactly the way you want.
5. Your own IP address
A VPS comes with its own (dedicated) IP address by default. This matters for SSL certificates, email reputation and certain applications that require a fixed IP.
When do you need a VPS?
Now that you know what a VPS is, the next question is: when do you need one?
Moving from shared hosting to a VPS is a natural step as your online presence grows. But when is the right moment? Here are the most common situations where a VPS is the right choice:
- Your website is getting too slow on shared hosting - If your website regularly loads slowly despite optimization, you probably need more resources.
- You have more than 10,000 visitors per month - At this traffic level shared hosting starts to show bottlenecks.
- You run an online store - Online stores need consistent performance for a good user experience and conversion.
- You want to install specific software - Node.js, Python, Redis, Elasticsearch, Docker, this isn't possible on shared hosting.
- You run multiple websites - With a VPS you can host multiple sites with full control over the configuration per site.
- You develop web applications - Applications with specific server requirements rarely fit within the limits of shared hosting.
- Security is extra important - For websites that process sensitive data, the isolation of a VPS is crucial.
Managed vs unmanaged VPS VPS: what is VPS management?
When choosing a VPS you'll come across two variants: managed and unmanaged. The difference matters, especially if you don't have much experience with server management.
Unmanaged VPS
With an unmanaged VPS you get a "bare" server with just an operating system. Everything on top of that, web server, databases, security, updates, monitoring, you have to install and manage yourself. This is ideal for experienced sysadmins and developers who want full control.
Advantages: Cheaper, maximum flexibility, you learn a lot about server management.
Disadvantages: Requires technical knowledge, you're responsible for everything yourself.
Managed VPS
With a managed VPS the hosting provider takes over server management. This usually includes installation and configuration of the web server, security updates, monitoring, backups and technical support. You only need to worry about your website or application.
Advantages: No technical knowledge needed, professional management, 24/7 monitoring.
Disadvantages: More expensive, less flexibility (provider determines the configuration).
For beginners and small businesses we always recommend a managed VPS. The cost advantage of an unmanaged VPS disappears quickly if you have to hire a system administrator or if your server gets hacked due to poor security.
What does a VPS cost?
The cost of a VPS varies significantly, depending on the specifications and whether it's managed or unmanaged:
| VPS type | Price per month | Suitable for |
|---|---|---|
| Unmanaged entry level | €5 - €15 | Hobby projects, test environments |
| Unmanaged mid range | €20 - €50 | Small to medium websites |
| Managed entry level | €20 - €40 | Small business websites |
| Managed mid range | €50 - €100 | Online stores, busy websites |
| Managed high performance | €100 - €200+ | High traffic sites, applications |
At Theory7 we offer both VPS and managed VPS solutions with NVMe SSD storage, Dutch data centers and excellent support.
How do you choose the right VPS?
Now that you understand what a VPS is and when you need one, it's time to choose the right one.
When choosing a VPS there are a number of factors to keep in mind:
Operating system
Most VPS packages run on Linux (Ubuntu, Debian, CentOS, AlmaLinux). Linux is free, stable and uses fewer resources than Windows. Windows Server is also possible but costs extra due to licensing.
Storage type
Always choose SSD or NVMe SSD. This makes a huge difference in the speed of your server. Traditional HDD disks are much slower and no longer suitable for hosting.
Data center location
Choose a data center as close as possible to your target audience. For Dutch websites, a Dutch data center is ideal for the lowest latency. Theory7 uses data centers in the Netherlands.
Support and uptime
Check the SLA (Service Level Agreement). An uptime guarantee of 99.9% or higher is standard. Also pay attention to support response times, when server issues occur you want to be helped quickly.
Scalability
Can you easily upgrade if you need more resources? And can that be done without downtime? This matters for growing websites.
Setting up a VPS: the first steps
You now know what a VPS is and which type you need. Time for the practical part.
Have you ordered a VPS? Then these are the first steps you need to take (for an unmanaged VPS):
- Connect via SSH: Use an SSH client (Terminal on Mac/Linux, PuTTY on Windows) to connect to your server.
- Update the system: Run
sudo apt update && sudo apt upgrade(Ubuntu/Debian) to update all software. - Create a new user: Don't log in as root by default. Create a separate user with sudo privileges.
- Configure SSH security: Disable root login, use SSH keys instead of passwords, change the SSH port.
- Install a firewall: Configure UFW or iptables to only open necessary ports (80, 443, SSH port).
- Install a web server: Install Nginx or Apache, depending on your preference.
- Install PHP and MySQL/MariaDB: For WordPress and other PHP applications.
- Install a Let's Encrypt SSL certificate: Use Certbot for free SSL.
With a managed VPS, all these steps are done for you. You can get straight to work installing your website or application.
Frequently asked questions: what is a VPS?
Is a VPS difficult to manage?
An unmanaged VPS requires basic knowledge of Linux and server management. If you don't have experience with this, choose a managed VPS instead. With a managed VPS, the technical management is done for you and you can focus on your website.
Can I run multiple websites on a VPS?
Yes, absolutely. One of the big advantages of a VPS is that you can host multiple websites on the same server. With virtual hosts in Nginx or Apache you can run dozens of websites, as long as you have enough resources.
How secure is a VPS?
A VPS is more secure than shared hosting because your environment is fully isolated. Security does depend on how well you configure your server, though. With a managed VPS, the provider takes care of professional security measures.
What's the difference between a VPS and cloud hosting?
A traditional VPS runs on a single physical server. Cloud hosting spreads your resources across multiple physical servers, which offers extra redundancy. In practice, many VPS providers now use cloud infrastructure, so the difference is becoming smaller.
Can I upgrade my VPS without downtime?
With many providers it's possible to add extra RAM or CPU without downtime (hot add). A full upgrade to a different package sometimes requires a brief restart. Check with your provider about the options.
How many visitors can a VPS handle?
This depends heavily on the type of website and the VPS specifications. A well optimized WordPress website on a VPS with 2 GB RAM can easily handle 50,000-100,000 visitors per month. Heavier applications like online stores need more resources per visitor.
VPS versus other hosting types: when do you choose what?
To understand what a VPS is and when you need one, it helps to compare it to other hosting types. With shared hosting you share a server with dozens to hundreds of other websites. This is cheap but limited: you have little control and performance depends on the behavior of your fellow users. For a personal blog or small website, shared hosting is usually sufficient.
A VPS offers the middle ground between shared hosting and a dedicated server. You get guaranteed resources (CPU, RAM, storage), root access, and the freedom to install your own software. This makes a VPS ideal for growing websites, online stores with increasing traffic, custom applications, and development environments that require specific server software.
A dedicated server is the premium option: a full physical server exclusively for you. This offers maximum performance and control, but at significantly higher cost (€100-500+ per month). For most businesses, a VPS is the better choice, since you get comparable performance for a fraction of the price. Only in the case of extreme workloads or strict compliance requirements is a dedicated server justified.
Setting up your first VPS: a practical guide
Now that you know what a VPS is, the next step is setting it up. After ordering your VPS you receive login details that let you connect via SSH. The first steps are updating the operating system, creating a non root user, configuring SSH key authentication, and disabling password login. These basic security steps are essential and should always be done first.
Next, install a web server (Apache, Nginx, or LiteSpeed), a database server (MySQL or MariaDB), and PHP or the programming language of your choice. This trio, also known as a LAMP or LEMP stack, forms the foundation for hosting websites and web applications. Many VPS providers offer pre installed images with this software already configured, which significantly speeds up setup.
Finally, configure a firewall to block unwanted traffic. UFW (Uncomplicated Firewall) is a user friendly option for Ubuntu servers. Only open the ports you actually need: port 22 for SSH, port 80 for HTTP, and port 443 for HTTPS. Close all other ports. Check our VPS security checklist for a complete overview of all the security measures you should take.
Optimizing and monitoring VPS performance
A good understanding of what a VPS is also includes knowledge of performance optimization. Start by monitoring your server resources: CPU usage, memory usage, disk I/O, and network traffic. Tools like htop, iotop, and server monitoring tools give you real time insight into your VPS's performance. Set up alerts for when resources exceed a certain threshold, so you can intervene proactively.
Optimize your web server configuration for the available resources. Adjust the number of worker processes and threads based on your available RAM and CPU cores. For Nginx, a good rule of thumb is one worker process per CPU core. Also configure PHP FPM with the right number of child processes. Too few processes lead to slow response times, while too many processes exhaust memory.
Implement caching at multiple levels to reduce the load on your VPS. Use opcode caching (OPcache) for PHP, object caching (Redis or Memcached) for database queries, and page caching for full HTML pages. A well configured caching stack can reduce the number of database queries by 90% or more, allowing your VPS to handle significantly more visitors without a hardware upgrade.
Now that you have a good understanding of what a VPS is, you can make an informed decision about your hosting choice. Start by evaluating your current and future needs, compare offers from different providers, and choose a package that has room to grow.
