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Backup · head to head

Datto SIRIS vs Restic

Datto SIRIS logo

Datto SIRIS

Backup

All-in-one business continuity and disaster recovery

From
$1095/one-time + recurring
Rated
-
Full reviewWebsite
Restic logo

Restic

Backup

Fast, secure, and efficient backup program

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Restic has a free tier, so it costs nothing to try first.
  • Each has a real cost: Datto SIRIS requires on-premises appliance, not purely cloud-native; 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: Datto SIRIS covers Instant virtualization, Restic covers Content-defined chunking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Datto SIRIS and Restic actually diverge.

Attributes where Datto SIRIS and Restic differ
AttributeDatto SIRISRestic
Starting price$1095/one-time + recurringFree
Pricing modelUnknownfree
Free tierNoYes
PlatformsLinux, Virtual EnvironmentsWindows, Mac, Linux
Founded20112014

Identical on both: 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 Datto SIRIS

  • Instant virtualization
  • Screenshot verification
  • Ransomware detection
  • Inverse chain technology
  • Cloud-first architecture
  • Automated DR testing
  • VMware
  • Hyper-V

Only in Restic

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

Both cover

  • Windows support
  • Linux support

What people use each for

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

Datto SIRIS

  • Data protectionnot Restic
  • Disaster recoverynot Restic
  • Business continuitynot Restic
  • Ransomware protectionnot Restic
  • Compliancenot Restic

Restic

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

Where each one falls short

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

Datto SIRIS

  • Requires on-premises appliance, not purely cloud-native
  • Initial setup and hardware costs can be substantial for smaller MSPs

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

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Restic

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

Which should you pick?

Choose Datto SIRIS if

  • You need instant virtualization.
  • You work on Linux, Virtual Environments.
  • You also want screenshot verification.
Datto SIRIS 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 Datto SIRIS or Restic better?
Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and Restic at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datto SIRIS or Restic?
Restic has a free tier; the other does not. Paid plans start at $1095/one-time + recurring for Datto SIRIS and Free for Restic.
Does Datto SIRIS or Restic run on more platforms?
Datto SIRIS runs on Linux, Virtual Environments. Restic runs on Windows, Mac, Linux.
Can I use Restic for free?
Yes. Restic has a free tier, so you can try it without paying. Datto SIRIS starts at $1095/one-time + recurring.
What is Datto SIRIS best used for?
Datto SIRIS is most often used for data protection, disaster recovery, business continuity, ransomware protection. Of those, data protection and disaster recovery are not what Restic is typically brought in for.
What can Datto SIRIS do that Restic cannot?
Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology. Restic covers Content-defined chunking, Cryptographic verification, Deduplication, Encryption. Both handle Windows support, Linux support.

Answered from the vendors’ own pages

Datto SIRIS: What does SIRIS protect against?

Datto SIRIS includes immutable cloud backups, automated recovery verification, and integrated ransomware detection through Cloud Deletion Defense which undoes accidental or malicious backup deletion.

Source
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
Datto SIRIS: What's the pricing model?

Datto SIRIS uses flat-rate pricing starting at $1,095, which includes installation, storage, VIP support, recoveries, two annual DR tests, and five-year warranty.

Source
Datto SIRIS: What integrations does SIRIS have?

Datto SIRIS integrates natively with Autotask PSA, Datto RMM, ConnectWise Automate, and ConnectWise PSA. It also supports virtualization platforms like vSphere and CentOS Linux.

Source
Datto SIRIS: Is SIRIS cloud-only or appliance-based?

Datto SIRIS is an on-premises appliance that backs up data to Datto's cloud. You do not need to maintain your own physical server infrastructure for the core SIRIS functionality.

Source
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