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Backup · head to head

rustic vs Veeam Kasten for Kubernetes

rustic logo

rustic

Backup

Rust reimplementation of restic that reads and writes the same repository format

From
Free
Rated
-
Full reviewWebsite
Veeam Kasten for Kubernetes logo

Veeam Kasten for Kubernetes

Backup

Kubernetes-native backup, disaster recovery and application mobility

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: rustic the project is small with a short list of active maintainers, so bus factor is a genuine consideration for software whose job is to still work in five years.; Veeam Kasten for Kubernetes licensing is per worker node, so clusters designed with many small nodes for scheduling flexibility pay considerably more than the same capacity in fewer large nodes.
  • They diverge on capability: rustic covers restic format compatibility, Veeam Kasten for Kubernetes covers Application-aware capture.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which rustic and Veeam Kasten for Kubernetes actually diverge.

Attributes where rustic and Veeam Kasten for Kubernetes differ
AttributerusticVeeam Kasten for Kubernetes
Pricing modelOpen source, no licence feePer worker node
PlatformsLinux, macOS, WindowsKubernetes, Linux

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

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 rustic

  • restic format compatibility
  • Configuration profiles
  • Deduplicated encrypted backups
  • Cold and append only storage support
  • Multiple back ends
  • Library crates

Only in Veeam Kasten for Kubernetes

  • Application-aware capture
  • Policy engine
  • Immutable targets
  • Restore transformation
  • Database hooks
  • Ransomware detection

What people use each for

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

rustic

  • An existing restic user who wants configuration files rather than long command lines in cronnot Veeam Kasten for Kubernetes
  • Backing up a memory constrained machine where the reference implementation is uncomfortably heavynot Veeam Kasten for Kubernetes
  • Writing to append only or cold object storage where the default tooling assumes rewritable bucketsnot Veeam Kasten for Kubernetes
  • Keeping a second implementation available so a long lived archive does not depend on one codebasenot Veeam Kasten for Kubernetes

Veeam Kasten for Kubernetes

  • A platform team that must prove to auditors it can restore a production namespace, not just its disksnot rustic
  • Migrating a stateful application from on-premises OpenShift to a managed cloud Kubernetes servicenot rustic
  • Protecting Kubernetes workloads to an immutable object store so ransomware cannot delete the backupsnot rustic
  • A team using operators and custom resources that volume-snapshot tools silently fail to capturenot rustic

Where each one falls short

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

rustic

  • The project is small with a short list of active maintainers, so bus factor is a genuine consideration for software whose job is to still work in five years.
  • It inherits the restic repository format, so design limits in that format, including the cost of pruning large repositories, are inherited rather than fixed.
  • Command names, flags and behaviour do not map one to one onto restic, so scripts and runbooks need rewriting rather than a binary swap.
  • Far fewer people have performed a real restore from it under pressure, and backup software is one of the few categories where being second most used is itself a risk.
  • Alternating between rustic and restic against one repository works but doubles the surface for a version incompatibility to corrupt state, so most operators should pick one and stay with it.

Veeam Kasten for Kubernetes

  • Licensing is per worker node, so clusters designed with many small nodes for scheduling flexibility pay considerably more than the same capacity in fewer large nodes.
  • The free Starter edition is scale limited and community supported, so it works for evaluation and small clusters but there is no gentle upgrade path when production grows past the limit.
  • Backup performance depends on the underlying CSI driver snapshot capability, so on storage without proper CSI snapshot support it falls back to slower generic copying.
  • Restores into a different cluster need matching custom resource definitions and operator versions present beforehand, so cross-cluster mobility is less automatic than the marketing suggests.
  • Kasten protects Kubernetes only, so organisations with mixed virtual machine and container estates run it alongside a separate backup product and manage two retention policies and two sets of evidence.

Pricing, plan by plan

rustic

Free
  • rusticFree
    • Full functionality, no data limit
    • All supported storage back ends
    • Community support via GitHub

Veeam Kasten for Kubernetes

Free
  • StarterFree
    • Functionally the same as Enterprise
    • Limited on scale and support
    • Intended for evaluation and small non-production clusters
  • Enterprise$undefined/year
    • Licensed per worker node, quoted annually
    • Available through AWS, Azure and Google Cloud marketplaces
    • Vendor support with SLAs

Which should you pick?

Choose rustic if

  • You need restic format compatibility.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want configuration profiles.
rustic review

Choose Veeam Kasten for Kubernetes if

  • You need application-aware capture.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want policy engine.
Veeam Kasten for Kubernetes review

Questions people ask

Is rustic or Veeam Kasten for Kubernetes better?
Neither clearly leads. rustic starts at Free and Veeam Kasten for Kubernetes at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, rustic or Veeam Kasten for Kubernetes?
rustic starts at Free and Veeam Kasten for Kubernetes at Free.
Does rustic or Veeam Kasten for Kubernetes run on more platforms?
rustic runs on Linux, macOS, Windows. Veeam Kasten for Kubernetes runs on Kubernetes, Linux.
Can I use rustic for free?
Both have a free tier, so you can try either at no cost before committing.
What is rustic best used for?
rustic is most often used for an existing restic user who wants configuration files rather than long command lines in cron, backing up a memory constrained machine where the reference implementation is uncomfortably heavy, writing to append only or cold object storage where the default tooling assumes rewritable buckets, keeping a second implementation available so a long lived archive does not depend on one codebase. Of those, an existing restic user who wants configuration files rather than long command lines in cron and backing up a memory constrained machine where the reference implementation is uncomfortably heavy are not what Veeam Kasten for Kubernetes is typically brought in for.
What can rustic do that Veeam Kasten for Kubernetes cannot?
rustic covers restic format compatibility, Configuration profiles, Deduplicated encrypted backups, Cold and append only storage support. Veeam Kasten for Kubernetes covers Application-aware capture, Policy engine, Immutable targets, Restore transformation.

Answered from the vendors’ own pages

rustic: Can it read my existing restic repository?

Yes, that is the point of the project. Take a copy and verify before you rely on it, as with any change to backup tooling.

Veeam Kasten for Kubernetes: Is Kasten K10 still a product?

It is now sold as Veeam Kasten for Kubernetes. The kasten.io domain redirects to Veeam and the documentation still lives at docs.kasten.io.

rustic: Should I switch from restic?

Only for a specific reason such as configuration profiles, memory use or cold storage handling. Compatibility means there is no cost to trying and no cost to going back.

Veeam Kasten for Kubernetes: Is there a free edition?

Yes, the Starter edition is free and functionally complete but limited on scale and support, aimed at evaluation and small non-production clusters.

rustic: Is it production ready?

It is used in production by a small community, but it is younger and less exercised than the implementation it is compatible with. Test restores accordingly.

Veeam Kasten for Kubernetes: How is Enterprise licensed?

Per worker node. Count your nodes, not your capacity, before comparing quotes, because node sizing directly changes the price.

rustic: Does it support the same back ends?

The common ones, including local, SFTP, S3 compatible storage and rclone. Check the current list before committing to an unusual target.

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