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File Storage · head to head

Ceph vs Portworx

Ceph logo

Ceph

File Storage

Open source distributed storage providing object, block and file from one cluster

From
Free
Rated
-
Portworx logo

Portworx

Cloud

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

From
$0.33/node hour
Rated
-

The short version

  • Only Ceph has a free tier, so it costs nothing to try first.
  • Each has a real cost: Ceph ceph assumes an operator who understands placement groups, CRUSH rules and recovery tuning, so organisations without dedicated storage staff routinely end up with a cluster that works until the first failure and then does not.; 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: Ceph covers RADOS object store, Portworx covers Container-native volumes.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Ceph and Portworx actually diverge.

Attributes where Ceph and Portworx differ
AttributeCephPortworx
Starting priceFree$0.33/node hour
Pricing modelOpen source, no licence feePer node hour
Free tierYesNo
CategoryFile StorageCloud

Identical on both: platforms (Linux), 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 Ceph

  • RADOS object store
  • RADOS Gateway
  • RBD block devices
  • CephFS
  • CRUSH placement
  • Erasure coded pools

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.

Ceph

  • Backing a private cloud where virtual machine disks, shared filesystems and an S3 endpoint all need the same hardwarenot Portworx
  • Growing past the point where a proprietary array upgrade costs more than a rack of commodity serversnot Portworx
  • Research and media environments with petabytes of data and staff who can operate storagenot Portworx
  • Providing an S3 endpoint on premises with multi site replication under your own controlnot Portworx

Portworx

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

Where each one falls short

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

Ceph

  • Ceph assumes an operator who understands placement groups, CRUSH rules and recovery tuning, so organisations without dedicated storage staff routinely end up with a cluster that works until the first failure and then does not.
  • Small clusters are inefficient: three way replication means a third of raw capacity is usable, and erasure coding needs enough failure domains to be safe, so the economics only work above a certain size.
  • Recovery and rebalancing generate heavy internal traffic, so a failed disk can degrade client latency across the cluster unless backfill is throttled correctly beforehand.
  • Upgrades must follow a strict daemon order across monitors, managers, OSDs and gateways, and a mistake in that order on a live cluster is difficult to reverse.
  • Because it is self hosted, every byte served to the internet is transit you pay for on your own links, so the free licence does not mean free egress and bandwidth planning becomes your problem rather than the providers.

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

Ceph

Free
  • CephFree
    • Full functionality, no capacity limit
    • Object, block and file interfaces
    • Community support via mailing list and Slack

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 Ceph if

  • You need rados object store.
  • You want to start without paying.
  • You work on Linux.
  • You also want rados gateway.

Choose Portworx if

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

Questions people ask

Is Ceph or Portworx better?
Neither clearly leads. Ceph 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, Ceph or Portworx?
Ceph has a free tier; the other does not. Paid plans start at Free for Ceph and $0.33/node hour for Portworx.
Does Ceph or Portworx run on more platforms?
Both run on Linux, so platform support will not decide this one for you.
Can I use Ceph for free?
Yes. Ceph has a free tier, so you can try it without paying. Portworx starts at $0.33/node hour.
What is Ceph best used for?
Ceph is most often used for backing a private cloud where virtual machine disks, shared filesystems and an s3 endpoint all need the same hardware, growing past the point where a proprietary array upgrade costs more than a rack of commodity servers, research and media environments with petabytes of data and staff who can operate storage, providing an s3 endpoint on premises with multi site replication under your own control. Of those, backing a private cloud where virtual machine disks, shared filesystems and an s3 endpoint all need the same hardware and growing past the point where a proprietary array upgrade costs more than a rack of commodity servers are not what Portworx is typically brought in for.
What can Ceph do that Portworx cannot?
Ceph covers RADOS object store, RADOS Gateway, RBD block devices, CephFS. Portworx covers Container-native volumes, Failure domain placement, Volume encryption, Database automation.

Answered from the vendors’ own pages

Ceph: How many nodes do I need to start?

Three is the practical minimum for a replicated cluster with real fault tolerance, and most production advice starts at five once you account for maintenance windows.

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.

Ceph: Is it faster than a SAN?

Not on single stream latency. It wins on aggregate throughput and on growing without a forklift upgrade, which is a different property from raw speed.

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.

Ceph: Can I buy support?

Yes. IBM sells IBM Storage Ceph and SUSE and others have offered supported builds; the upstream project itself is free.

Portworx: Is backup included?

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

Ceph: Should I use it just for S3?

If object is all you need, a dedicated object store is simpler to run. Ceph earns its complexity when you need block and file as well.

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