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Backup · head to head

Datto SIRIS vs Unitrends Backup

Datto SIRIS logo

Datto SIRIS

Backup

All-in-one business continuity and disaster recovery

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

Unitrends Backup

Backup

All-in-one backup and recovery appliance

From
$55/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Datto SIRIS requires on-premises appliance, not purely cloud-native; Unitrends Backup pricing is not transparent and requires contacting the company directly for a custom quote
  • They diverge on capability: Datto SIRIS covers Instant virtualization, Unitrends Backup covers Predictive analytics.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Datto SIRIS and Unitrends Backup actually diverge.

Attributes where Datto SIRIS and Unitrends Backup differ
AttributeDatto SIRISUnitrends Backup
Starting price$1095/one-time + recurring$55/month
Pricing modelUnknownsubscription
PlatformsLinux, Virtual EnvironmentsOn-premises, Cloud, Hybrid
Founded20111989

Identical on both: free tier (No), 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
  • Inverse chain technology
  • Cloud-first architecture
  • Automated DR testing
  • Windows Server
  • ConnectWise
  • Autotask

Only in Unitrends Backup

  • Predictive analytics
  • Automated recovery testing
  • Instant recovery
  • Adaptive deduplication
  • Cloud integration
  • Google Workspace
  • AWS
  • Azure

Both cover

  • Ransomware detection
  • VMware
  • Hyper-V
  • Microsoft 365
  • 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 protection
  • Disaster recovery
  • Business continuity
  • Ransomware protection
  • Compliance

Unitrends Backup

  • Data protection
  • Disaster recovery
  • Business continuity
  • Ransomware protection
  • Compliance

Both are used for data protection, disaster recovery, business continuity, ransomware protection, compliance, on those jobs the choice comes down to price and fit rather than capability.

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

Unitrends Backup

  • Pricing is not transparent and requires contacting the company directly for a custom quote
  • Minimum pricing starts at approximately $995, limiting accessibility for very small deployments
  • Unified pricing approach means less flexibility for scaling individual components

Pricing, plan by plan

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Unitrends Backup

$55/month
  • Recovery Series$55/month
    • Predictive analytics
    • Instant recovery
    • Ransomware detection

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 Unitrends Backup if

  • You need predictive analytics.
  • You work on On-premises, Cloud, Hybrid.
  • You also want automated recovery testing.
Unitrends Backup review

Questions people ask

Is Datto SIRIS or Unitrends Backup better?
Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and Unitrends Backup at $55/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datto SIRIS or Unitrends Backup?
Datto SIRIS starts at $1095/one-time + recurring and Unitrends Backup at $55/month.
Does Datto SIRIS or Unitrends Backup run on more platforms?
Datto SIRIS runs on Linux, Virtual Environments. Unitrends Backup runs on On-premises, Cloud, Hybrid.
What is Datto SIRIS best used for?
Datto SIRIS is most often used for data protection, disaster recovery, business continuity, ransomware protection.
What can Datto SIRIS do that Unitrends Backup cannot?
Datto SIRIS covers Instant virtualization, Screenshot verification, Inverse chain technology, Cloud-first architecture. Unitrends Backup covers Predictive analytics, Automated recovery testing, Instant recovery, Adaptive deduplication. Both handle Ransomware detection, VMware, Hyper-V, Microsoft 365.

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
Unitrends Backup: What does Unitrends Backup include in its pricing?

Unitrends offers all-in-one backup and disaster recovery with a single flat rate including installation, storage, VIP support, and recoveries, plus two DR tests per year and a 5-year warranty.

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
Unitrends Backup: What are Unitrends' key disaster recovery features?

Unitrends provides instant recovery, automated recovery assurance, automatic testing capabilities to measure recovery time and points, ransomware protection with behavioral analysis, and bare metal recovery to dissimilar hardware.

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
Unitrends Backup: How long has Unitrends been in the backup market?

Unitrends was founded in 1989 and has over three decades of experience in backup and disaster recovery solutions, pioneering the first hardware-based backup appliance in 2002.

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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