Softwr

Cloud · head to head

Proxmox VE vs Rook

Proxmox VE logo

Proxmox VE

Cloud

Open-source hypervisor combining KVM and LXC virtualisation

From
€120/year
Rated
-
Full reviewWebsite
Rook logo

Rook

Cloud

Kubernetes operator that deploys and manages Ceph storage clusters

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Rook has a free tier, so it costs nothing to try first.
  • Each has a real cost: Proxmox VE per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers; Rook rook automates Ceph but does not abstract it, so an incident still demands Ceph expertise, and organisations without it end up hiring consultants at exactly the wrong moment.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Proxmox VE and Rook actually diverge.

Attributes where Proxmox VE and Rook differ
AttributeProxmox VERook
Starting price€120/yearFree
Pricing modelsubscriptionOpen source, no licence fee
Free tierNoYes
PlatformsLinux, Web, API, Self-hostedLinux, Kubernetes

Identical on both: user rating (Not yet rated), category (Cloud).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Proxmox VE

Nothing recorded that Rook does not also cover.

Only in Rook

  • Ceph operator
  • Block, file and object
  • Erasure coding
  • CSI driver
  • Automated upgrades
  • Multi-cluster mirroring

What people use each for

The jobs each tool is most often brought in to do.

Proxmox VE

  • Open-source datacenter virtualisation for hosting providers and cloud platformsnot Rook
  • Cost-sensitive enterprise virtualisation replacing commercial hypervisorsnot Rook
  • High-availability clustering for disaster recovery and business continuitynot Rook
  • Container deployments using LXC as lighter-weight alternative to Dockernot Rook
  • Hybrid VM and container workloads in a single management interfacenot Rook
  • Backup and archival infrastructure alongside primary virtualisationnot Rook

Rook

  • An on-premises Kubernetes platform needing block, shared filesystem and S3 storage without buying three productsnot Proxmox VE
  • A team that already runs Ceph and wants its lifecycle managed declaratively inside Kubernetesnot Proxmox VE
  • A large cluster where three-way replication overhead is unaffordable and erasure coding is requirednot Proxmox VE
  • An organisation building a private cloud that cannot use managed cloud storage services for residency reasonsnot Proxmox VE

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Proxmox VE

  • Per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers
  • Linux-based host only; Windows hypervisors not supported, limiting adoption in Windows-focused organisations
  • Clustering and high-availability setup requires operational expertise and careful network configuration
  • Commercial support tiers limit advanced features (just-in-time access, network flow logs) to paid subscriptions
  • Smaller ecosystem of third-party plugins and integrations compared to VMware vSphere

Rook

  • Rook automates Ceph but does not abstract it, so an incident still demands Ceph expertise, and organisations without it end up hiring consultants at exactly the wrong moment.
  • There is no vendor and no SLA; the realistic commercial support routes are IBM Red Hat OpenShift Data Foundation or an independent Ceph consultancy, both of which change the cost picture entirely.
  • Ceph is resource hungry, needing substantial memory and dedicated disks per OSD, so the hardware cost of a properly sized cluster is often underestimated.
  • Recovery and rebalancing after a disk or node failure generates heavy background input and output that can degrade application performance for hours, which surprises teams sizing for steady state.
  • Minimum viable clusters require several nodes with several disks each, so it is impractical at small scale and the entry hardware cost exceeds simpler alternatives.

Pricing, plan by plan

Proxmox VE

€120/year
  • Community$120/year
    • Enterprise Repository access
    • Community forum support only
    • Per-socket subscription model
  • Basic$370/year
    • 3 support tickets per year
    • 1 business day response time
    • Stable updates and Enterprise Repository
  • Standard$550/year
    • 10 support tickets per year
    • 4-hour response time for critical issues
    • Remote SSH support and offline updates
  • Premium$1100/year
    • Unlimited support tickets
    • 2-hour response time for critical issues
    • Remote SSH support and offline updates

Rook

Free
  • RookFree
    • Apache 2.0 licensed, no licence fee
    • Graduated CNCF project
    • Community support via GitHub and Slack only

Which should you pick?

Choose Proxmox VE if

  • You work on Linux, Web, API, Self-hosted.
Proxmox VE review

Choose Rook if

  • You need ceph operator.
  • You want to start without paying.
  • You work on Linux, Kubernetes.
  • You also want block, file and object.
Rook review

Questions people ask

Is Proxmox VE or Rook better?
Neither clearly leads. Proxmox VE starts at €120/year and Rook at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proxmox VE or Rook?
Rook has a free tier; the other does not. Paid plans start at €120/year for Proxmox VE and Free for Rook.
Does Proxmox VE or Rook run on more platforms?
Proxmox VE runs on Linux, Web, API, Self-hosted. Rook runs on Linux, Kubernetes.
Can I use Rook for free?
Yes. Rook has a free tier, so you can try it without paying. Proxmox VE starts at €120/year.
What is Proxmox VE best used for?
Proxmox VE is most often used for open-source datacenter virtualisation for hosting providers and cloud platforms, cost-sensitive enterprise virtualisation replacing commercial hypervisors, high-availability clustering for disaster recovery and business continuity, container deployments using lxc as lighter-weight alternative to docker. Of those, open-source datacenter virtualisation for hosting providers and cloud platforms and cost-sensitive enterprise virtualisation replacing commercial hypervisors are not what Rook is typically brought in for.
What can Proxmox VE do that Rook cannot?
Rook covers Ceph operator, Block, file and object, Erasure coding, CSI driver.

Answered from the vendors’ own pages

Proxmox VE: What is the licensing model for Proxmox VE?

Proxmox VE is open-source and free to deploy. Optional subscription tiers provide technical support, priority response times, and access to the Enterprise Repository for stable update channels. All tiers include identical virtualisation features.

Source
Rook: Who supports it in production?

Nobody by default. IBM sells Red Hat OpenShift Data Foundation, which is supported Rook and Ceph, and independent consultancies sell Ceph support. Decide this before deployment.

Proxmox VE: Can I run Proxmox VE without a support subscription?

Yes. Community Edition (€120/year per socket) provides Enterprise Repository access with community-based support through forums. The core Proxmox VE platform is fully functional without any subscription.

Source
Rook: Does it need Ceph knowledge?

Yes. Rook handles deployment and routine operations, but troubleshooting a degraded cluster is a Ceph skill and there is no way around it.

Proxmox VE: What hypervisors does Proxmox VE support?

Proxmox VE includes both KVM for full virtualisation and LXC for Linux containers. It does not support Xen or Hyper-V. Workloads on those platforms must be migrated or reimplemented.

Source
Rook: Can it replace an object storage appliance?

Functionally yes, through the RADOS gateway, but you take on the operations that an appliance vendor would otherwise carry.

Share

Related pages

More on Proxmox VE

More on Rook

Keep looking

Other head to heads