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File Storage · head to head

Ceph vs Restic

Ceph logo

Ceph

File Storage

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

From
Free
Rated
-
Full reviewWebsite
Restic logo

Restic

Backup

Fast, secure, and efficient backup program

From
Free
Rated
-
Full reviewWebsite

The short version

  • 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.; Restic cold storage is not natively supported; restoring from S3 Glacier and S3 Glacier Deep Archive is only available as an experimental feature behind a feature flag
  • They diverge on capability: Ceph covers RADOS object store, Restic covers Content-defined chunking.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Ceph and Restic actually diverge.

Attributes where Ceph and Restic differ
AttributeCephRestic
Pricing modelOpen source, no licence feefree
PlatformsLinuxWindows, Mac, Linux
CategoryFile StorageBackup
FoundedUnknown2014

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 Ceph

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

Only in Restic

  • Content-defined chunking
  • Cryptographic verification
  • Deduplication
  • Encryption
  • Multiple backends
  • Snapshot management
  • AWS S3
  • Azure

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 Restic
  • Growing past the point where a proprietary array upgrade costs more than a rack of commodity serversnot Restic
  • Research and media environments with petabytes of data and staff who can operate storagenot Restic
  • Providing an S3 endpoint on premises with multi site replication under your own controlnot Restic

Restic

  • Encrypted deduplicated backups to S3, B2, SFTP and local disk from the command linenot Ceph
  • Scripted server backups with snapshot retention policiesnot 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.

Restic

  • Cold storage is not natively supported; restoring from S3 Glacier and S3 Glacier Deep Archive is only available as an experimental feature behind a feature flag
  • A Windows file whose name contains a character Windows treats as invalid cannot be read by restic and has to be renamed
  • Antivirus real-time protection degrades performance on Windows unless the restic binary is added to an exclusions list
  • On large repositories the built-in five minute stuck-request timeout fires during file listing and has to be raised manually with --stuck-request-timeout

Pricing, plan by plan

Ceph

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

Restic

Free
  • FreeFree
    • Content-defined chunking
    • Encryption
    • Multiple backends

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.
Ceph review

Choose Restic if

  • You need content-defined chunking.
  • You want to start without paying.
  • You work on Windows, Mac, Linux.
  • You also want cryptographic verification.
Restic review

Questions people ask

Is Ceph or Restic better?
Neither clearly leads. Ceph starts at Free and Restic at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ceph or Restic?
Ceph starts at Free and Restic at Free.
Does Ceph or Restic run on more platforms?
Ceph runs on Linux. Restic runs on Windows, Mac, Linux.
Can I use Ceph for free?
Both have a free tier, so you can try either at no cost before committing.
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 Restic is typically brought in for.
What can Ceph do that Restic cannot?
Ceph covers RADOS object store, RADOS Gateway, RBD block devices, CephFS. Restic covers Content-defined chunking, Cryptographic verification, Deduplication, Encryption.

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.

Restic: How much does restic cost?

Restic is entirely free to use and completely open source. There are no subscription tiers, paid plans, or licensing costs.

Source
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.

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.

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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