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Backup · head to head

Datto SIRIS vs Spanning Backup

Datto SIRIS logo

Datto SIRIS

Backup

All-in-one business continuity and disaster recovery

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

Spanning Backup

Backup

SaaS backup for Google Workspace and Microsoft 365

From
$4/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Datto SIRIS requires on-premises appliance, not purely cloud-native; Spanning Backup no pricing published; requires quote request
  • They diverge on capability: Datto SIRIS covers Instant virtualization, Spanning Backup covers Automated daily backup.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Datto SIRIS and Spanning Backup differ
AttributeDatto SIRISSpanning Backup
Starting price$1095/one-time + recurring$4/month
Pricing modelUnknownsubscription
PlatformsLinux, Virtual EnvironmentsCloud SaaS
Founded20112010

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

Only in Spanning Backup

  • Automated daily backup
  • Point-in-time restore
  • Cross-user restore
  • eDiscovery
  • Unlimited storage
  • Admin delegation
  • Google Workspace
  • Salesforce

Both cover

  • Microsoft 365
  • Web support

What people use each for

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

Datto SIRIS

  • Data protectionnot Spanning Backup
  • Disaster recoverynot Spanning Backup
  • Business continuitynot Spanning Backup
  • Ransomware protectionnot Spanning Backup
  • Compliancenot Spanning Backup

Spanning Backup

  • SaaS backup and recoverynot Datto SIRIS
  • Microsoft 365 backupnot Datto SIRIS
  • Google Workspace backupnot Datto SIRIS
  • Salesforce backupnot 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

Spanning Backup

  • No pricing published; requires quote request
  • Pricing is customizable based on data volume and service changes

Pricing, plan by plan

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Spanning Backup

$4/month
  • Spanning Backup$4/month
    • Daily backup
    • Point-in-time restore
    • Unlimited storage

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 Spanning Backup if

  • You need automated daily backup.
  • You work on Cloud SaaS.
  • You also want point-in-time restore.
Spanning Backup review

Questions people ask

Is Datto SIRIS or Spanning Backup better?
Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and Spanning Backup at $4/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datto SIRIS or Spanning Backup?
Datto SIRIS starts at $1095/one-time + recurring and Spanning Backup at $4/month.
Does Datto SIRIS or Spanning Backup run on more platforms?
Datto SIRIS runs on Linux, Virtual Environments. Spanning Backup runs on Cloud SaaS.
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 Spanning Backup is typically brought in for.
What can Datto SIRIS do that Spanning Backup cannot?
Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology. Spanning Backup covers Automated daily backup, Point-in-time restore, Cross-user restore, eDiscovery. Both handle Microsoft 365, 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
Spanning Backup: How much does Spanning Backup cost?

Spanning Backup does not publish pricing online. The company offers FLEXspend, a feature that gives complete flexibility in adjusting backup spend based on data changes. Customers must request a quote through their pricing page.

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
Spanning Backup: Does Spanning Backup offer a free trial?

Yes, Spanning Backup offers a free trial. Customers can also book a call or request a demo to discuss their specific backup needs and receive a custom quote.

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
Spanning Backup: What products does Spanning Backup cover?

Spanning Backup provides backup solutions for Microsoft 365, Google Workspace, and Salesforce with customizable pricing based on organizational needs.

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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