Softwr

Cloud · head to head

K3s vs Portworx Backup

K3s logo

K3s

Cloud

Lightweight certified Kubernetes distribution in a single binary

From
Free
Rated
-
Full reviewWebsite
Portworx Backup logo

Portworx Backup

Backup

Kubernetes application backup with a free tier up to one terabyte

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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 Backup the paid tier carries a 1,000 node hour monthly minimum, so a cluster that only needs occasional protection still pays a floor.
  • They diverge on capability: K3s covers Single binary, Portworx Backup covers Application-level backup.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which K3s and Portworx Backup actually diverge.

Attributes where K3s and Portworx Backup differ
AttributeK3sPortworx Backup
Pricing modelOpen source, no licence feePer node hour
PlatformsLinux, ARM, Self-hostedWeb, Linux
CategoryCloudBackup

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 Backup

  • Application-level backup
  • Any CSI provider
  • Cross-cluster restore
  • Namespace and label selection
  • Scheduled policies
  • Role-based access
  • Free tier

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 Backup
  • Development and CI clusters that must start fast and cost nothingnot Portworx Backup
  • Small production clusters where full Kubernetes is more operations than the workload justifiesnot Portworx Backup
  • Teaching and learning Kubernetes without cloud spendnot Portworx Backup

Portworx Backup

  • A platform team running Velero that needs an accountable vendor for restore failuresnot K3s
  • Protecting Kubernetes applications across EKS, GKE and on premises clusters under one policy setnot K3s
  • Restoring a namespace into a different cloud provider as a disaster recovery testnot K3s
  • A small team that wants real Kubernetes backup within the free one terabyte tier before committing budgetnot 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 Backup

  • The paid tier carries a 1,000 node hour monthly minimum, so a cluster that only needs occasional protection still pays a floor.
  • It is licensed separately from Portworx Enterprise, so organisations that assumed storage and backup came together find a second subscription in the quote.
  • The free tier caps at one terabyte of protected data, which is quickly exceeded by any database of consequence and forces a jump straight to the minimum commitment.
  • Backup targets are object stores you provide, so restore egress charges from your cloud provider are outside the vendor price and appear during a recovery rather than in procurement.
  • Application-consistent backup of databases still depends on correct pre and post hooks, so the product does not remove the requirement to understand and rehearse your own restore ordering.

Pricing, plan by plan

K3s

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

Portworx Backup

Free
  • FreeFree
    • Up to one terabyte of protected data
    • No feature restrictions
    • Fully managed service
  • Portworx Backup$0.2/node hour
    • Minimum 1,000 node hours per month
    • Unlimited protected capacity
    • Any Container Storage Interface provider

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 Backup if

  • You need application-level backup.
  • You want to start without paying.
  • You work on Web, Linux.
  • You also want any csi provider.
Portworx Backup review

Questions people ask

Is K3s or Portworx Backup better?
Neither clearly leads. K3s starts at Free and Portworx Backup at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, K3s or Portworx Backup?
K3s starts at Free and Portworx Backup at Free.
Does K3s or Portworx Backup run on more platforms?
K3s runs on Linux, ARM, Self-hosted. Portworx Backup runs on Web, Linux.
Can I use K3s for free?
Both have a free tier, so you can try either at no cost before committing.
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 Backup is typically brought in for.
What can K3s do that Portworx Backup cannot?
K3s covers Single binary, SQLite by default, Certified conformant, Batteries included. Portworx Backup covers Application-level backup, Any CSI provider, Cross-cluster restore, Namespace and label selection.

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 Backup: Is the free tier real?

Yes, up to one terabyte of protected data with no feature restrictions as a managed service. It is a usable production tier for small footprints, not a trial.

K3s: Is K3s real Kubernetes?

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

Portworx Backup: Does it only protect Portworx volumes?

No. It works across Container Storage Interface providers, including cloud provider storage and other vendors' drivers.

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 Backup: Is it included with Portworx Enterprise?

No. It is a separate licence at 0.20 USD per node hour with its own minimum.

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.

Share

Related pages

More on K3s

More on Portworx Backup

Keep looking

Other head to heads