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Cloud · head to head

K3s vs Portworx

K3s logo

K3s

Cloud

Lightweight certified Kubernetes distribution in a single binary

From
Free
Rated
-
Full reviewWebsite
Portworx logo

Portworx

Cloud

Kubernetes-native storage and data services, priced by the node hour

From
$0.33/node hour
Rated
-
Full reviewWebsite

The short version

  • Only K3s has a free tier, so it costs nothing to try first.
  • Each has a real cost: K3s the SQLite default is single-server only; highly available control planes need etcd or an external datastore, which removes much of the simplicity; Portworx bare metal nodes are charged at 1.11 USD per node hour against 0.33 for virtual nodes, so a bare metal cluster costs more than three times a virtualised one for identical capability.
  • They diverge on capability: K3s covers Single binary, Portworx covers Container-native volumes.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which K3s and Portworx actually diverge.

Attributes where K3s and Portworx differ
AttributeK3sPortworx
Starting priceFree$0.33/node hour
Pricing modelOpen source, no licence feePer node hour
Free tierYesNo
PlatformsLinux, ARM, Self-hostedLinux

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 K3s

  • Single binary
  • SQLite by default
  • Certified conformant
  • Batteries included
  • Low resource footprint
  • Simple install

Only in Portworx

  • Container-native volumes
  • Failure domain placement
  • Volume encryption
  • Database automation
  • Disaster recovery
  • Autopilot capacity management
  • Hardware independence

What people use each for

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

K3s

  • Kubernetes on edge sites and IoT hardware where full clusters will not fitnot Portworx
  • Development and CI clusters that must start fast and cost nothingnot Portworx
  • Small production clusters where full Kubernetes is more operations than the workload justifiesnot Portworx
  • Teaching and learning Kubernetes without cloud spendnot Portworx

Portworx

  • Running a production PostgreSQL or Cassandra cluster on Kubernetes and needing the data to survive node lossnot K3s
  • A platform team offering self-service databases to developers on an internal Kubernetes platformnot K3s
  • Failing over stateful applications between clusters in different regions as a disaster recovery positionnot K3s
  • An OpenShift estate where the built-in storage option does not meet the availability requirement for stateful setsnot K3s

Where each one falls short

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

K3s

  • The SQLite default is single-server only; highly available control planes need etcd or an external datastore, which removes much of the simplicity
  • Bundled components such as Traefik are opinionated defaults that larger teams often strip out and replace
  • Removed in-tree cloud provider integrations mean cloud-specific features need external controllers
  • Aimed at small and edge clusters, so very large deployments are better served by a standard distribution

Portworx

  • Bare metal nodes are charged at 1.11 USD per node hour against 0.33 for virtual nodes, so a bare metal cluster costs more than three times a virtualised one for identical capability.
  • A 1,000 node hour monthly minimum applies, which means small or intermittent clusters pay for capacity they do not consume.
  • Replicating volumes across nodes consumes real capacity and network bandwidth, so the underlying infrastructure cost rises alongside the licence in a way the node hour rate does not show.
  • Pure Storage ownership means roadmap priorities are set by an array vendor, and buyers should confirm that hardware independence remains contractual rather than assumed.
  • Operating it well requires Kubernetes storage expertise, and teams that adopted Kubernetes to simplify operations often find they have added a distributed storage system to run.

Pricing, plan by plan

K3s

Free
  • K3sFree
    • Full functionality
    • No usage limits
    • Community support

Portworx

$0.33/node hour
  • Portworx Enterprise on virtual machine nodes$0.33/node hour
    • Minimum 1,000 node hours per month
    • Replicated persistent volumes
    • Encryption and disaster recovery
  • Portworx Enterprise on bare metal nodes$1.11/node hour
    • Minimum 1,000 node hours per month
    • Same capabilities on bare metal clusters
    • Higher rate reflects node density

Which should you pick?

Choose K3s if

  • You need single binary.
  • You want to start without paying.
  • You work on Linux, ARM, Self-hosted.
  • You also want sqlite by default.
K3s review

Choose Portworx if

  • You need container-native volumes.
  • You work on Linux.
  • You also want failure domain placement.
Portworx review

Questions people ask

Is K3s or Portworx better?
Neither clearly leads. K3s starts at Free and Portworx at $0.33/node hour, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, K3s or Portworx?
K3s has a free tier; the other does not. Paid plans start at Free for K3s and $0.33/node hour for Portworx.
Does K3s or Portworx run on more platforms?
K3s runs on Linux, ARM, Self-hosted. Portworx runs on Linux.
Can I use K3s for free?
Yes. K3s has a free tier, so you can try it without paying. Portworx starts at $0.33/node hour.
What is K3s best used for?
K3s is most often used for kubernetes on edge sites and iot hardware where full clusters will not fit, development and ci clusters that must start fast and cost nothing, small production clusters where full kubernetes is more operations than the workload justifies, teaching and learning kubernetes without cloud spend. Of those, kubernetes on edge sites and iot hardware where full clusters will not fit and development and ci clusters that must start fast and cost nothing are not what Portworx is typically brought in for.
What can K3s do that Portworx cannot?
K3s covers Single binary, SQLite by default, Certified conformant, Batteries included. Portworx covers Container-native volumes, Failure domain placement, Volume encryption, Database automation.

Answered from the vendors’ own pages

K3s: Is K3s free?

Yes. K3s is open source with no licence fee. SUSE sells commercial support around Rancher separately.

Portworx: Is Portworx tied to Pure Storage hardware?

No. It runs on any Kubernetes distribution over any underlying storage, though Pure has owned it since 2020 and sets the roadmap.

K3s: Is K3s real Kubernetes?

Yes. It is CNCF-certified conformant, so standard manifests, kubectl and Helm charts work without modification.

Portworx: What does a real cluster cost?

At 0.33 USD per virtual node hour, twenty nodes running continuously is roughly 4,800 USD a month. Bare metal at 1.11 USD per node hour is around 16,000 USD for the same node count.

K3s: Why is K3s smaller than Kubernetes?

It strips legacy, alpha and in-tree cloud provider code, packages everything as one binary, and defaults to SQLite instead of etcd.

Portworx: Is backup included?

No. Portworx Backup is a separately priced product covering Kubernetes application backup.

K3s: Can K3s run in production?

Yes, and it does, particularly at the edge and for small clusters. For a highly available control plane you need to move off the SQLite default to etcd or an external datastore.

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