Managed Proxmox Cluster & VMware Alternative

Q: Are my virtual machines highly available?

Yes. In an HA cluster, your VM data is kept in sync across multiple nodes thanks to distributed Ceph storage. If a node fails, the affected virtual machines are automatically restarted on a healthy node — with no data loss. With live migration, we also move VMs during operation without downtime, for example during maintenance.

Your GDPR-compliant infrastructure – professionally deployed and managed

Stay in control of your workloads – we take care of the rest

With a Proxmox cluster operated by us, your VMs and containers run on a highly available, license-free open-source platform. We handle the entire operation – hardware, software, updates, and backups; you simply use the cluster. Hosted in a German, ISO-certified data center with on-site technicians, strong data protection, and optimal network connectivity with low latency to relevant providers and internet exchanges. As an experienced partner managing over 1,000 devices, we handle setup, operations, monitoring, and integration into your existing IT – including migrating your current VMware or Hyper-V machines.

Our promise

Maximum resilience through high availability (HA), failover, and a 99.9% uptime SLA

Full data sovereignty – open source, no license traps

Reliable support and transparent, hands-on management

Professional Proxmox clusters for demanding workloads

Our fully managed Proxmox cluster is built for modern, demanding workloads. The package combines highly available cluster nodes, distributed Ceph storage for true high availability – your VM data is stored synchronously across multiple nodes (ZFS optional for single nodes) – and automated backups, so your virtual machines stay protected and available at all times. Ideal for companies looking to replace VMware or run their own scalable, open-source virtualization platform.

Cluster S

Ideal for small teams and newcomers

monthly from 579,00 €*

Flexible contract terms

Nodes

RAM / Node

128 GB**

CPU / Node

AMD EPYC · 16 cores**

NVMe / Node

3× 3.84 TB (Ceph)**

Uplink / Node

2× 25G, redundant

Power supply

redundant

Managed operations (Germany)

High availability (HA cluster)

KVM VMs & LXC containers

Distributed Ceph storage

Live migration without downtime

High-performance NVMe infrastructure

Proxmox Backup Server

Disaster recovery (offsite)

24/7 monitoring & support

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Cluster M

Ideal for growing, mission-critical workloads

Price on request*

Flexible contract terms

Nodes

RAM / Node

512 GB**

CPU / Node

AMD EPYC · 32 cores**

NVMe / Node

3× 7.68 TB (Ceph)**

Uplink / Node

2× 50G, redundant

Power supply

redundant

Managed operations (Germany)

High availability (HA cluster)

KVM VMs & LXC containers

Distributed Ceph storage

Live migration without downtime

High-performance NVMe infrastructure

Proxmox Backup Server

Disaster recovery (offsite)

24/7 monitoring & support

Inquire now

Cluster L

Ideal for large, demanding
environments

Price on request*

Flexible contract terms

Nodes

RAM / Node

1 TB**

CPU / Node

AMD EPYC · 64 cores**

NVMe / Node

3× 15.36 TB (Ceph)**

Uplink / Node

2× 100G, redundant

Power supply

redundant

Managed operations (Germany)

High availability (HA cluster)

KVM VMs & LXC containers

Distributed Ceph storage

Live migration without downtime

High-performance NVMe infrastructure

Proxmox Backup Server

Disaster recovery (offsite)

24/7 monitoring & support

Inquire now

Individuelles Cluster

Ideal for specialized, complex requirements

Custom quote*

Flexible contract terms

Nodes

as needed

RAM Node

as needed

CPU / Node

as needed

NVMe / Node

as needed

Uplink / Node

up to 2× 100G, redundant

Power supply

redundant

Managed operations (Germany)

Dedicated resources

KVM VMs & LXC containers

Ceph / ZFS storage

Live migration without downtime

High-performance NVMe infrastructure

Proxmox Backup Server

Fast provisioning

24/7 monitoring & support

Inquire now

All prices are exclusive of statutory VAT. * The server hardware market is currently subject to significant price volatility; to consistently offer you fair, market-based rates, we prepare individual quotes on request – always with the goal of securing the best possible, competitive price for you. ** CPU, RAM and NVMe specifications are example configurations; we finalize the exact sizing individually with you.

Custom platform solutions for complex, demanding requirements

Where standard solutions reach their limits, our approach begins. We design custom platforms for high data volumes, dynamic structures, and long-term scalability. From bespoke cluster architectures to specific integrations, the focus is always on a solution tailored precisely to your requirements. On request, we distribute your cluster across multiple fire compartments or run two clusters at separate sites – for example, Düsseldorf and Frankfurt.

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Add-ons & extensions for your cluster

Add on flexibly: extend your managed Proxmox cluster with backup, storage, and disaster recovery – exactly when you need it.
Easy to set up, productive right away.

Proxmox Backup Server

per cluster

Flexible contract terms

monthly from49,00 €

Daily automated backups

Incremental & deduplicated

14-day retention

Fast recovery

Encrypted backups

Backup job monitoring

Single-file restore

Optional offsite copy

Backup reporting

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Storage expansion

per TB

Flexible contract terms

monthly from25,00 €

Ceph / ZFS storage

NVMe performance

Flexibly scalable

Redundant storage

Thin provisioning

Snapshots included

Billed per TB

Optional geo-replication

Storage monitoring

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Disaster Recovery

individual

Flexible contract terms

On request

Geo-redundant replication

Second data center

Defined RPO/RTO

Automated failover

Regular DR tests

Encrypted transfer

Emergency recovery

Personal contact

Custom concept

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Why host your Proxmox cluster with oneCorp?

With a managed Proxmox cluster from oneCorp, you get a highly available, GDPR-compliant virtualization platform from Germany, operated specifically for mission-critical workloads. Keep full control of your virtual machines and data, benefit from high performance, and rely on a scalable cluster infrastructure that grows with your requirements.

Your data – our priority

Your data stays in your hands. We operate your Proxmox cluster in Germany under strict GDPR compliance – no data mining, no third-party access.

Icon: leistungsstarke Infrastruktur für Workloads

Powerful infrastructure for your workloads

Fast live migration, seamless cluster operation, and high availability – powered by optimized server infrastructure and enterprise-grade hardware.

Your Proxmox cluster – in expert hands

We handle setup, updates, and security patches – so you can focus entirely on your business.

Your data secure in Germany – GDPR guaranteed

Your data is stored securely in German data centers – GDPR-compliant and held to high data protection standards.

Proxmox backups & fast recovery

Automated backups via Proxmox Backup Server and fast recovery protect your virtual machines – even in a worst-case scenario.

Protected all around – security at the highest level

Firewalls, intrusion detection, encryption, and continuous monitoring protect your virtual machines around the clock.

Full control over your infrastructure – secure, private, and on your terms.

Illustration: Team setzt gemeinsam Puzzleteile zusammen – persönliche Betreuung

With us, you're never just a number

We value personal contact, understand your individual requirements, and deliver tailored solutions with short communication paths.

Illustration: vernetzte IT-Infrastruktur mit Servern, Cloud und Endgeräten

Modern, reliable infrastructure

We rely on current technologies and a stable system architecture. Your infrastructure is carefully planned, securely implemented, and built for long-term performance – for smooth, efficient operation.

Expert support from start to finish

We support you at every stage – from installation and configuration to ongoing operation – and are reliably at your side with expert advice.

An image representing team work and collaboration

A long-term partnership

We continue to support you with maintenance, support, and ongoing development, so your solution stays stable and scales flexibly with your requirements.

Proxmox – the VMware alternative for businesses

Replace VMware without lock-in: we migrate your existing VMs to a managed Proxmox cluster – open source, no per-CPU license costs, highly available, and fully managed. We also help you switch from any other provider – no matter which platform you're coming from. Get in touch.

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Secure VM management

Run your virtual machines centrally and with high availability. We provide a powerful Proxmox cluster with distributed Ceph storage, so your VM data is stored synchronously across multiple nodes and your workloads stay secure and available at all times. Manage resources and access rights flexibly, exactly as your requirements demand.

This is an icon representing data protection

Data protection & compliance

We operate your Proxmox cluster in a GDPR-compliant, highly available data center with strict security and data protection standards. This gives you a reliable foundation on which to flexibly meet your individual compliance requirements.

Cross-device access

Manage your cluster securely at any time – via the Proxmox web interface, the API, or through us. We make sure your virtual machines run reliably and your data stays consistent.

Live migration & HA

Move virtual machines between cluster nodes during live operation – with zero downtime. If a node fails, the HA cluster automatically restarts the affected VMs on a healthy node, so your workloads stay continuously available.

FAQ – Frequently asked questions

What is Proxmox and a Proxmox cluster?

A Proxmox cluster is a group of multiple Proxmox VE nodes that work together as a single, highly available virtualization platform. If one node fails, the others take over automatically – your virtual machines keep running. Proxmox VE is open source and combines KVM VMs and LXC containers in a single interface.

What hardware does my cluster run on?

We run your cluster on modern enterprise hardware with NVMe storage in German, ISO-27001-certified data centers. In the HA cluster, distributed Ceph storage ensures your data is redundantly spread across multiple nodes – ZFS is optionally available for single-node setups.

What workloads can I run on the cluster?

Almost any workload – from individual virtual servers and web or database applications to complete enterprise environments. KVM VMs and LXC containers can be flexibly combined and scaled at any time.

How does Proxmox differ from VMware?

Proxmox VE is an open-source virtualization platform with no per-CPU or per-socket license costs. It offers comparable enterprise features such as HA clustering, live migration, and software-defined storage – making it an ideal, cost-effective VMware alternative, especially following Broadcom's licensing changes.

Are my virtual machines highly available?

Yes. In the HA cluster, distributed Ceph storage keeps your VM data synchronized across multiple nodes. If a node fails, the affected virtual machines are automatically restarted on a healthy node – with no data loss. With live migration, we can also move VMs during operation with zero downtime, for example during maintenance.

Is a Proxmox cluster secure?

Yes. We run your cluster in certified data centers with firewalling, network segmentation, encrypted storage, and regular security updates. Backups via Proxmox Backup Server and optional offsite / disaster recovery targets protect your data even further.

Is the service GDPR-compliant?

Yes. oneCorp GmbH operates your cluster exclusively in GDPR-compliant, ISO-27001-certified data centers in Germany – your data never leaves the country.

What do I need for a managed Proxmox cluster?

Essentially just your requirements – the number of VMs, the performance you need, and your availability targets. We take care of the hardware, setup, cluster configuration, storage, and ongoing operation entirely for you.

What does managed service mean?

Managed service means we handle the complete operation of your Proxmox cluster. You get your dedicated cluster infrastructure in a German, ISO-27001-certified data center. We take care of setup, updates, security patches, monitoring, and backups – with a personal contact instead of an anonymous ticketing system. That way, you benefit from professional operations without having to worry about hardware, maintenance, or technology.

Die VMware-Alternative - hochverfügbar & vollständig betreut

Your GDPR-compliant infrastructure – professionally deployed and managed

Our promise

Professional Proxmox clusters for demanding workloads

Cluster S

Cluster M

Cluster L

Individuelles Cluster

Custom platform solutions for complex, demanding requirements

Add-ons & extensions for your cluster

Why host your Proxmox cluster with oneCorp?

With us, you're never just a number

Modern, reliable infrastructure

Expert support from start to finish

A long-term partnership

Proxmox – the VMware alternative for businesses

Secure VM management

Data protection & compliance

Cross-device access

Live migration & HA

FAQ – Frequently asked questions