Everything on one cluster, no licensing trap. Practices, critical infra, small data centres.
Where our clients used to need dedicated servers for every application, today everything runs on a Proxmox cluster. Open source (free, source code open), with professional high availability, snapshot backup and a really usable web interface. We use Proxmox for practice servers, critical-infra environments and small data centres — as a sensible alternative to VMware (which has become significantly more expensive since the Broadcom acquisition in 2024).
What Proxmox is and what it can do
Proxmox VE is a Linux-based virtualisation platform — you can run any number of virtual machines (VMs) and containers (LXC) on one physical server. Web interface for management, snapshot backups, live migration between servers (a VM can move from one server to another without downtime), high availability (if a server fails, VMs automatically start on another).
Why Proxmox instead of VMware
Three reasons: cost (Proxmox is free, optional support contract from ~€110/year per server — VMware since Broadcom often costs 5–10 times more), no vendor lock-in (open source, you’re not extortable on licence changes), European development (Proxmox company is based in Vienna, data sovereignty guaranteed).
Video overview
Proxmox VE explained in 5 minutes (compact overview)
When VMware or Hyper-V fits better
Honestly: Proxmox isn’t for everyone. If you have a very large environment (>100 hosts, highly complex networks), need integration with other VMware products, or require highly specialised hardware drivers — then VMware is often still the better tool. For smaller practices, law firms and also smaller critical-infra setups, Proxmox is clearly the economically and technically better choice.
Impressions
Typical Proxmox setups
Practice server
PMS + file + mail
One Proxmox server, three VMs (PMS database, file server, mail server). Snapshot before every update.
Practice cluster
2 Proxmox nodes + backup
High availability: if one server fails, VMs automatically start on the second.
Critical-infra environment
3+ nodes, Ceph storage
Software-defined storage, automatic failover, BSI-Grundschutz-compliant setup.
Small data centre
5+ nodes, separate backup cluster
Full datacentre setup without VMware licence costs.
What we deliver with Proxmox
- Hardware consulting and sizing (CPU, RAM, storage, network)
- Installation with BSI-compliant hardening
- Cluster configuration with high availability
- Veeam connection for application-aware backup
- Migration of existing VMware environments to Proxmox
- Service contract with updates, monitoring and emergency response
Does this solution fit your needs?
Send us a brief description of what you want to protect or secure – we’ll get back to you with an honest assessment and a non-binding proposal.
Email info@grass-security.solutions
Service tickets: ticket@grass-security.solutions
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