What is Proxmox?

Proxmox is an open-source platform for vir­tu­al­isa­tion and con­tain­er­isa­tion. It allows for the operation and man­age­ment of virtual machines, con­tain­ers, and high-avail­ab­il­ity clusters. With its web-based interface and active community, Proxmox is con­sidered a flexible and cost-effective al­tern­at­ive to com­mer­cial vir­tu­al­isa­tion solutions.

An in­tro­duc­tion to Proxmox

Proxmox Virtual En­vir­on­ment (PVE) is an open-source vir­tu­al­isa­tion platform in­tro­duced in 2008 by Proxmox Server Solutions GmbH. It combines the KVM (Kernel-based Virtual Machine) hy­per­visor with LXC con­tain­ers, enabling the use of both tra­di­tion­al virtual machines and light­weight con­tain­ers. Ad­min­is­tra­tion can be handled through a web-based interface or the command line, with the option to enable Proxmox SSH for direct access if required.

A key feature of PVE is its support for clus­ter­ing and high avail­ab­il­ity, which allows multiple Proxmox servers to be connected. The platform also includes built-in tools for backup, recovery, and live migration. It supports common guest operating systems such as Linux and Windows. Thanks to its open ar­chi­tec­ture, storage tech­no­lo­gies like ZFS, iSCSI, and Ceph on Proxmox can be easily in­teg­rated. This makes PVE a flexible solution suitable for both small-scale en­vir­on­ments and large en­ter­prise de­ploy­ments.

What are the re­quire­ments?

Running Proxmox requires a certain level of hardware. For private test setups, older servers or PCs are often suf­fi­cient, but pro­duc­tion systems demand more powerful resources. In par­tic­u­lar, for a Proxmox Bare Metal In­stall­a­tion, it is re­com­men­ded to use high-per­form­ance hardware to ensure a stable and efficient en­vir­on­ment.

• CPU: 64-bit processor with Intel VT-x or AMD-V support
• Memory: At least 2 GB RAM, ad­di­tion­al RAM for each guest (re­com­men­ded: 8 GB or more)
• Disk Space: Starting from 32 GB (sig­ni­fic­antly more depending on VMs/con­tain­ers), SSD is re­com­men­ded
• Network card with gigabit con­nec­tion
• USB stick or DVD drive for in­stall­a­tion

What are the ap­plic­a­tions?

Proxmox is highly versatile and can be used in a wide range of IT en­vir­on­ments. From home labs and small busi­nesses to large-scale data centres, the platform supports numerous scenarios. Below are some of the most common use cases.

File server

Proxmox can be used to run a file server. Thanks to vir­tu­al­isa­tion, file shares can be provided for Windows, Linux, and macOS clients. Built-in storage solutions ensure high data security, while snapshots and backups enable quick recovery in the event of a failure. A Proxmox-based file server can also be easily scaled by adding new virtual machines. This makes it an at­tract­ive option for both small teams and larger en­ter­prises, as it enables cent­ral­ised and efficient data man­age­ment.

Backup server

Another key use case is setting up a dedicated backup server. Proxmox provides its own solution with Proxmox Backup Server, spe­cific­ally optimised for fast and space-efficient data backups. Backups can be performed in­cre­ment­ally to save storage space, while en­cryp­tion protects data from un­au­thor­ised access. When combined with clus­ter­ing, backups can also be dis­trib­uted across multiple locations. This makes Proxmox es­pe­cially well-suited for busi­nesses that pri­or­it­ise failover pro­tec­tion.

Test and de­vel­op­ment en­vir­on­ments

Proxmox is an excellent choice for de­velopers and ad­min­is­trat­ors who need test or de­vel­op­ment en­vir­on­ments. New software can be safely tested in virtual machines or con­tain­ers without putting the host system at risk. Snapshots make it easy to revert to a stable state, and multiple versions of an ap­plic­a­tion can be run in parallel for com­par­is­on. Automated testing also benefits from the quick pro­vi­sion­ing of new instances. In addition, the ability to set up a Kuber­netes cluster on Proxmox makes it possible to test con­tain­er­ised ap­plic­a­tions under realistic con­di­tions. These features make Proxmox a popular tool in DevOps and CI/CD workflows.

Web and ap­plic­a­tion hosting

Proxmox can also be used to ef­fi­ciently host web and ap­plic­a­tion servers. Ad­min­is­trat­ors can run separate virtual machines or con­tain­ers for different services, such as databases, web servers, or mail servers. This setup improves security and allows for precise resource al­loc­a­tion. Proxmox’s high avail­ab­il­ity features help keep critical ap­plic­a­tions online even in the event of hardware failures, while clus­ter­ing makes scaling straight­for­ward. For small hosting providers or internal business ap­plic­a­tions, Proxmox offers a cost-effective al­tern­at­ive to expensive cloud solutions.

Virtual Desktop In­fra­struc­ture (VDI)

Proxmox can also be used to set up Virtual Desktop In­fra­struc­tures (VDI). Employees can access virtual desktops through thin clients or remote con­nec­tions, which are centrally hosted in the data centre. This greatly reduces the man­age­ment effort for end devices. Security updates can be rolled out centrally, improving overall IT security. BYOD (Bring Your Own Device) scenarios are also supported, since the actual work en­vir­on­ment runs on secure servers. This approach is es­pe­cially valuable for companies with many mobile employees.

What are the ad­vant­ages and dis­ad­vant­ages of Proxmox?

Proxmox provides a wide range of features and is freely available under an open-source license. It brings together vir­tu­al­isa­tion, con­tain­er­isa­tion, backup, and cluster man­age­ment in a single solution. Its web-based interface makes ad­min­is­tra­tion straight­for­ward, even for beginners. At the same time, more advanced scenarios—such as clus­ter­ing or Ceph storage—require a solid level of technical expertise. While the core platform is free, busi­nesses can purchase a sub­scrip­tion for pro­fes­sion­al support. For very large in­fra­struc­tures with spe­cial­ised needs, com­mer­cial al­tern­at­ives may sometimes provide a more stable ecosystem.

An overview of the ad­vant­ages and dis­ad­vant­ages

Who is Proxmox re­com­men­ded for?

Proxmox is suitable for a broad range of users. IT en­thu­si­asts can use it to simulate server en­vir­on­ments in a home lab and build hands-on ex­per­i­ence. Small and medium-sized busi­nesses benefit from its low cost and high flex­ib­il­ity. The ability to run multiple services—such as file servers, web servers, or test en­vir­on­ments—on a single platform is es­pe­cially appealing. Larger or­gan­isa­tions are also adopting Proxmox, par­tic­u­larly in areas where open-source solutions are valued. Those who pri­or­it­ise trans­par­ency, cus­tom­is­ab­il­ity, and community support will find Proxmox a strong option. However, users with limited technical knowledge should be ready to invest time in learning the platform.

What are the most popular Proxmox al­tern­at­ives?

In addition to Proxmox, there are several other vir­tu­al­isa­tion platforms that may be suitable depending on your specific re­quire­ments. Some follow com­mer­cial licensing models, while others are also available as open source.

• VMware vSphere/ESXi: One of the most widely known vir­tu­al­isa­tion solutions with a strong focus on en­ter­prise-grade features. VMware is highly stable, but in com­par­is­on Proxmox vs VMware, it is a licensed solution and often more expensive than the open-source al­tern­at­ive.
• Microsoft Hyper-V: A vir­tu­al­isa­tion tech­no­logy in­teg­rated into Windows Server. In com­par­is­on Proxmox vs. Hyper-V, Hyper-V is par­tic­u­larly at­tract­ive for or­gan­isa­tions already invested in the Microsoft ecosystem.
• Xen/XCP-ng: An open-source hy­per­visor that provides solid per­form­ance and flex­ib­il­ity. The com­par­is­on Proxmox vs XCP-ng shows that XCP-ng is es­pe­cially popular in hosting en­vir­on­ments.
• oVirt: An open-source vir­tu­al­isa­tion platform based on KVM, similar to Proxmox but with a different ar­chi­tec­ture and man­age­ment approach.
• KVM: An open-source hy­per­visor built into the Linux kernel that delivers strong per­form­ance and flex­ib­il­ity. Unlike Proxmox, which uses KVM as its found­a­tion and adds a user-friendly web interface along with extra features, running pure KVM—see Proxmox vs KVM—requires more manual con­fig­ur­a­tion and expertise.
• Docker: While not a direct re­place­ment for Proxmox, Docker is an at­tract­ive option for con­tain­er­ised ap­plic­a­tions. It is par­tic­u­larly well-suited for mi­croservices and DevOps workflows.