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Backup · head to head

Datto SIRIS vs Duplicacy

Datto SIRIS logo

Datto SIRIS

Backup

All-in-one business continuity and disaster recovery

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

Duplicacy

Backup

Lock-free deduplication cloud backup

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Duplicacy 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; Duplicacy web GUI pricing tier not specified on product page
  • They diverge on capability: Datto SIRIS covers Instant virtualization, Duplicacy covers Lock-free deduplication.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Datto SIRIS and Duplicacy differ
AttributeDatto SIRISDuplicacy
Starting price$1095/one-time + recurringFree
Pricing modelUnknownfreemium
Free tierNoYes
PlatformsLinux, Virtual EnvironmentsmacOS, Linux, Windows
Founded20112016

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 Duplicacy

  • Lock-free deduplication
  • Client-side encryption
  • Multiple computers
  • Erasure coding
  • Variable-size chunking
  • RSA encryption
  • AWS S3
  • Azure

Both cover

  • Windows support
  • Linux support
  • Web support

What people use each for

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

Datto SIRIS

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

Duplicacy

  • Client-side encrypted cloud backupsnot Datto SIRIS
  • Lock-free deduplication for efficient backup storagenot Datto SIRIS
  • Multi-destination backup supportnot 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

Duplicacy

  • Web GUI pricing tier not specified on product page

Pricing, plan by plan

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Duplicacy

Free

No published plan breakdown. See the Duplicacy review.

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 Duplicacy if

  • You need lock-free deduplication.
  • You want to start without paying.
  • You work on macOS, Linux, Windows.
  • You also want client-side encryption.
Duplicacy review

Questions people ask

Is Datto SIRIS or Duplicacy better?
Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and Duplicacy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datto SIRIS or Duplicacy?
Duplicacy has a free tier; the other does not. Paid plans start at $1095/one-time + recurring for Datto SIRIS and Free for Duplicacy.
Does Datto SIRIS or Duplicacy run on more platforms?
Datto SIRIS runs on Linux, Virtual Environments. Duplicacy runs on macOS, Linux, Windows.
Can I use Duplicacy for free?
Yes. Duplicacy 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 Duplicacy is typically brought in for.
What can Datto SIRIS do that Duplicacy cannot?
Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology. Duplicacy covers Lock-free deduplication, Client-side encryption, Multiple computers, Erasure coding. Both handle Windows support, Linux support, Web 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
Duplicacy: What is the cost of the Duplicacy command line version for commercial use?

The commercial license for Duplicacy's command line version costs $50 per machine per year. The CLI version is free for individual users.

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
Duplicacy: Is pricing available for the Duplicacy Web GUI edition?

No pricing information is provided for the Web Edition (GUI) on the Duplicacy website. You would need to contact [email protected] for Web Edition pricing details.

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
Duplicacy: Are volume discounts available for IT service providers?

Yes, volume discounts are available for IT service providers and resellers. Contact [email protected] to discuss volume pricing options.

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
Duplicacy: What backup modes and features are included in the free version?

The free version includes file, disk, partition, and system backup with full, incremental, and differential backup modes. It also offers scheduled backups, encryption, and emergency disk creation.

Source
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