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Cloud · head to head

Rook vs Scality RING

Rook logo

Rook

Cloud

Kubernetes operator that deploys and manages Ceph storage clusters

From
Free
Rated
-
Full reviewWebsite
Scality RING logo

Scality RING

File Storage

Petabyte-scale object storage software on your own hardware

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Rook has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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.; Scality RING hardware is bought separately, so the software quote understates total cost and the buyer carries the sizing risk if the drive and server specification is wrong.
  • They diverge on capability: Rook covers Ceph operator, Scality RING covers S3-compatible object storage.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Rook and Scality RING actually diverge.

Attributes where Rook and Scality RING differ
AttributeRookScality RING
Starting priceFreeOn request
Pricing modelOpen source, no licence feequote
Free tierYesNo
PlatformsLinux, KubernetesLinux
CategoryCloudFile Storage

Identical on both: 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 Rook

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

Only in Scality RING

  • S3-compatible object storage
  • File and object access
  • Object lock
  • Multi-site geodistribution
  • Hardware independence
  • ARTESCA

Both cover

  • Erasure coding

What people use each for

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

Rook

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

Scality RING

  • A broadcaster archiving decades of video where hyperscaler storage and egress costs would be prohibitivenot Rook
  • A hospital group holding medical imaging on premises for data residency and retention reasonsnot Rook
  • An enterprise building an immutable on premises backup target for Veeam or Commvault with object locknot Rook
  • A service provider offering S3-compatible storage to its own customers on hardware it controlsnot Rook

Where each one falls short

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

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.

Scality RING

  • Hardware is bought separately, so the software quote understates total cost and the buyer carries the sizing risk if the drive and server specification is wrong.
  • Running distributed erasure coded storage requires operations skills, and organisations that expected appliance simplicity end up staffing a storage team they had not budgeted.
  • Rebuild times after a drive failure on large capacity disks are measured in hours or days, and capacity planning has to leave headroom for that degraded window.
  • Pricing is per usable terabyte and quoted, so cost comparisons against cloud object storage require modelling your own retrieval patterns rather than reading a rate card.
  • Small deployments carry a minimum viable node count for erasure coding to work sensibly, which makes the entry footprint larger and less economic than the per-terabyte price implies.

Pricing, plan by plan

Rook

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

Scality RING

On request
  • Scality RING$undefined/year
    • Priced per usable terabyte, subscription or perpetual
    • Server hardware purchased separately by the customer
    • Support tiers quoted separately
  • Scality ARTESCA$undefined/year
    • Lighter object store for smaller footprints
    • Priced per usable terabyte
    • Commonly deployed as an immutable backup target

Which should you pick?

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

Choose Scality RING if

  • You need s3-compatible object storage.
  • You work on Linux.
  • You also want file and object access.
Scality RING review

Questions people ask

Is Rook or Scality RING better?
Neither clearly leads. Rook starts at Free and Scality RING at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Rook or Scality RING?
Rook has a free tier; the other does not. Paid plans start at Free for Rook and On request for Scality RING.
Does Rook or Scality RING run on more platforms?
Rook runs on Linux, Kubernetes. Scality RING runs on Linux.
Can I use Rook for free?
Yes. Rook has a free tier, so you can try it without paying. Scality RING starts at On request.
What is Rook best used for?
Rook is most often used for an on-premises kubernetes platform needing block, shared filesystem and s3 storage without buying three products, a team that already runs ceph and wants its lifecycle managed declaratively inside kubernetes, a large cluster where three-way replication overhead is unaffordable and erasure coding is required, an organisation building a private cloud that cannot use managed cloud storage services for residency reasons. Of those, an on-premises kubernetes platform needing block, shared filesystem and s3 storage without buying three products and a team that already runs ceph and wants its lifecycle managed declaratively inside kubernetes are not what Scality RING is typically brought in for.
What can Rook do that Scality RING cannot?
Rook covers Ceph operator, Block, file and object, CSI driver, Automated upgrades. Scality RING covers S3-compatible object storage, File and object access, Object lock, Multi-site geodistribution. Both handle Erasure coding.

Answered from the vendors’ own pages

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.

Scality RING: Do we buy hardware from Scality?

No. RING is software; you buy commodity servers and drives yourself, which is the point for buyers who want to rebid hardware at each refresh.

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.

Scality RING: Is it S3-compatible enough for backup software?

Yes, it is a common object lock target for Veeam, Commvault and Rubrik. Verify the specific S3 features your backup product needs during a proof of concept.

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.

Scality RING: What is ARTESCA?

A lighter object store from the same company, aimed at smaller footprints and backup targets rather than multi-petabyte archives.

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