RHEL is a subscription, not a perpetual license
The RHEL code itself is open source — you don't buy a "license" in the Windows sense. You pay Red Hat for a subscription: access to updates and security patches, technical support, hardware/application (ISV) certifications and management tooling. Without an active subscription the system still runs, but you lose updates and support — and formally you aren't entitled to use Red Hat's repositories.
subscription (no perpetual)
socket pair / host
Standard, Premium
That's a fundamental difference from Windows Server: there a perpetual license lets you run a version "indefinitely", with support/patches over the lifecycle. RHEL is fully subscription-based — stop paying and you stop receiving updates.
The subscription on a dense Proxmox host
The key cost decision is how many RHEL VMs you run on a host:
| Subscription type | What it covers | Effect on Proxmox |
|---|---|---|
| RHEL Server (per-socket) | 1 host up to 2 CPU sockets or up to 2 virtual nodes (VMs) | every ~2 RHEL VMs needs another subscription |
| RHEL for Virtual Datacenters | a host socket pair — unlimited RHEL guests on that host | one subscription covers all RHEL VMs on the node |
Analogous to the "density trap": under per-socket, every pair of RHEL VMs is another subscription. On a node with a dozen-plus RHEL VMs, Virtual Datacenters (unlimited guests per socket pair) is almost always cheaper — it's the equivalent of Windows Datacenter.
In an HA cluster you assign subscriptions to physical hosts. If a RHEL VM can start on several nodes (live migration / failover), each such node should be covered — the same logic as with Windows licensing.
Red Hat catalog prices
Below are indicative annual Red Hat catalog prices (1-year subscription). Resellers and multi-year deals usually discount (typically 15–35%), so treat this as a budgeting reference point.
| Subscription | Scope | Catalog price / year (USD) | Approx. (PLN) |
|---|---|---|---|
| RHEL Server — Self-support | host up to 2 sockets / 2 VMs, no SLA | ~$349 | ~1,400 zł |
| RHEL Server — Standard | host up to 2 sockets / 2 VMs, 8×5 support | ~$799 | ~3,200 zł |
| RHEL Server — Premium | host up to 2 sockets / 2 VMs, 24×7 support | ~$1,299 | ~5,200 zł |
| RHEL for Virtual Datacenters — Standard | socket pair, unlimited guests, 8×5 | ~$2,499 | ~10,000 zł |
| RHEL for Virtual Datacenters — Premium | socket pair, unlimited guests, 24×7 | ~$3,999 | ~16,000 zł |
Example — a 2-socket node with 10 RHEL VMs. Per-socket Standard: 10 VMs ÷ 2 = 5 subscriptions × $799 = ~$3,995/yr. Virtual Datacenters Standard: ~$2,499/yr for any number of RHEL guests on that node — and the more VMs, the bigger the VDC advantage.
Prices are indicative, converted at ~4 zł/USD; Red Hat publishes the list in USD, and real rates depend on channel, discounts and contract length. Subscriptions may also be counted differently for large/multi-socket hosts — confirm your scenario with a Red Hat partner.
What to choose
- Many RHEL VMs on a node → RHEL for Virtual Datacenters: one subscription per socket pair, unlimited guests.
- A few RHEL VMs → RHEL Server per-socket (Standard or Premium per the SLA you need).
- ISV certifications / critical SLA → RHEL Premium (24×7) on the machines that truly need it.
- HA cluster → cover every node a RHEL VM can move to with a subscription.
Red Hat's models and prices change over time — confirm your specific scenario and current rates with a Red Hat partner. The above are general rules and indicative prices, not commercial or legal advice.
Interested in licensing Windows VMs on the same cluster? See Windows Server licensing on Proxmox VE — the per-core model, Datacenter, per-VM and 2025 prices.
We'll size RHEL licenses for your cluster
We'll plan the optimal subscription model — per-socket or Virtual Datacenters — so the cost is as low as possible while keeping support and compliance.
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