If you manage servers for a living, run a home lab in your spare room, or you’re a UK small business owner trying to make sense of your IT infrastructure, you’ve probably heard the name Proxmox VE cropping up more and more. Whether it’s in a Reddit thread, a local IT meetup, or a conversation with your MSP, Proxmox Virtual Environment has become one of the most talked-about platforms in UK IT circles over the past couple of years. But what exactly is it, and why is everyone suddenly so interested? This guide explains everything you need to know, in plain English.
What Is Proxmox VE?
Proxmox Virtual Environment (Proxmox VE, or just “Proxmox”) is a free, open-source server virtualisation platform developed by Proxmox Server Solutions GmbH, a company based in Vienna, Austria. It is what’s known as a Type 1 hypervisor — meaning it runs directly on bare metal hardware, rather than sitting inside an existing operating system like Windows or macOS. This is an important distinction. Because Proxmox has direct access to your hardware, it is more efficient and more stable than software that has to share resources with a host OS.
Proxmox VE is built on top of Debian Linux, and it combines two powerful virtualisation technologies into a single, unified platform: KVM (Kernel-based Virtual Machine) for full virtual machines, and LXC (Linux Containers) for lightweight containerised workloads. This means you can run a full Windows Server VM alongside a lean Ubuntu container on the same physical host, managing everything from a single web-based interface.
The Web-Based Management Interface
One of the most immediately impressive things about Proxmox, especially for those coming from older tools or command-line-only environments, is its management interface. Once Proxmox is installed on a server, you access it entirely through a web browser — no client software to install, no remote desktop connection required. You simply navigate to the server’s IP address on port 8006 and log in.
From the web interface, you can create and manage virtual machines, deploy containers, configure networking and storage, set up backups, monitor resource usage, and manage clustering if you have multiple Proxmox hosts. It is comprehensive without being overwhelming, and for most day-to-day tasks you will rarely need to touch the command line.
Free and Open Source — With an Optional Enterprise Subscription
Proxmox VE is free to download, install, and use. The source code is open and the community edition is fully functional with no artificial feature limitations. You do not need to pay anything to run virtual machines, use the web interface, or access any of the core features.
Where money comes in is with the optional enterprise subscription, which gives you access to a tested, stable enterprise repository (rather than the community “no-subscription” repository), along with commercial support from Proxmox Server Solutions. For UK businesses running Proxmox in production, the enterprise subscription is worth considering — but for home labs and evaluation purposes, the free tier is entirely sufficient.
How Proxmox Compares to VMware ESXi
For years, VMware ESXi was the default choice for enterprise server virtualisation, and many UK IT professionals have grown up working with it. However, the landscape shifted dramatically in late 2023 when Broadcom completed its acquisition of VMware and proceeded to make sweeping changes to the licensing model. Perpetual licences were discontinued, product bundles were restructured, and prices for many customers increased substantially — in some cases by several hundred per cent.
The backlash was immediate, and UK IT teams felt it keenly. SMBs that had been running VMware on modest hardware found themselves facing renewal costs that simply did not make commercial sense. MSPs and IT consultants who recommended VMware to their clients suddenly had to rethink their entire virtualisation strategy.
Proxmox filled the gap. Functionally, it covers the same core use cases as ESXi: running multiple virtual machines on a single physical host, live migration between hosts, high availability clustering, and centralised management. The learning curve is real — particularly if you have years of VMware muscle memory — but the feature parity for most SMB and MSP workloads is strong, and the price difference is difficult to argue with.
Why UK IT Admins and Home Lab Enthusiasts Love It
The UK home lab community, which congregates across forums, Discord servers, and local user groups, has embraced Proxmox enthusiastically. Part of this is pragmatic: old enterprise hardware — Dell PowerEdge servers, HP ProLiants — is readily available from UK secondhand markets and eBay at low cost, and Proxmox runs happily on it. A home lab enthusiast can pick up a decommissioned server for a few hundred pounds and have a fully featured virtualisation platform running within an afternoon.
For UK MSPs and IT consultants, the commercial appeal is equally clear. Proxmox allows them to offer clients a robust, supportable virtualisation layer without the per-socket or per-core licensing costs that have made VMware increasingly difficult to justify for smaller clients. The optional enterprise subscription is inexpensive relative to VMware licensing, and the Debian Linux base means most Linux-experienced engineers can support it confidently.
Minimum Hardware Requirements
Proxmox VE is not particularly demanding in terms of hardware, which is part of its appeal. At a minimum, you need a 64-bit processor with hardware virtualisation support (Intel VT-x or AMD-V), at least 2GB of RAM (though 8GB or more is recommended if you plan to run multiple VMs), and a hard drive or SSD of at least 32GB for the operating system. A network interface card and a modern CPU are both highly recommended.
For a functional home lab or small business server, a used enterprise machine with 32GB to 128GB of RAM, a multi-core CPU, and a mix of SSD and spinning disk storage will serve you extremely well. If you plan to run VMs that require GPU passthrough — for example, for gaming or AI workloads — you will need a compatible graphics card and a CPU/motherboard that supports IOMMU.
What Can You Run on Proxmox?
The honest answer is: almost anything. Proxmox is a generalise virtualisation platform, so the workloads are limited primarily by your imagination and your hardware.
Common Use Cases
- Windows Server VMs — run Windows Server 2019 or 2022 for Active Directory, file sharing, or application hosting
- Linux servers — Ubuntu, Debian, Rocky Linux, and others run as first-class VMs or LXC containers
- Home Assistant — the popular UK home automation platform runs brilliantly in a Proxmox VM or dedicated container
- Docker and self-hosted applications — deploy Portainer, Nextcloud, Jellyfin, Vaultwarden, or any other self-hosted app in a dedicated container or VM
- Network appliances — pfSense, OPNsense, and similar firewall/router distributions run well as VMs
- Development and testing environments — spin up throwaway VMs for software testing, isolated development, or learning
Getting Started
Installing Proxmox VE is straightforward. You download the ISO from the official Proxmox website, write it to a USB drive using a tool such as Rufus or Balena Etcher, boot your server from it, and follow the guided installer. Within twenty minutes, you will have a working Proxmox host accessible from any browser on your local network. From there, the official Proxmox documentation and the active community wiki will guide you through creating your first VM.
For UK home labbers and small businesses alike, Proxmox VE represents one of the most compelling options in server virtualisation today — powerful, flexible, genuinely free, and increasingly well-supported by a growing community of UK users who have made the switch and never looked back.
Related Proxmox Guides
- How to Install Proxmox VE: Step-by-Step Guide
- How to Create a Virtual Machine in Proxmox
- How to Create an LXC Container in Proxmox
- Proxmox vs VMware ESXi vs Hyper-V: Which Should You Choose?
- How to Set Up Proxmox Backup Server
- How to Run Home Assistant in Proxmox
