Software · head to head
Datto SIRIS vs Zerto

Datto SIRIS
Software
All-in-one business continuity and disaster recovery
- From
- $1095/one-time + recurring
- Rated
- -
The short version
- Each has a real cost: Datto SIRIS requires on-premises appliance, not purely cloud-native; Zerto zerto with Azure is listed on UK G-Cloud as a reseller-managed disaster recovery service, not Zerto's own licence pricing, with OS management from £75 per host per month for the public sector
- They diverge on capability: Datto SIRIS covers Instant virtualization, Zerto covers Continuous data protection.
Where they differ
Only the attributes on which Datto SIRIS and Zerto actually diverge.
| Attribute | Datto SIRIS | Zerto |
|---|---|---|
| Starting price | $1095/one-time + recurring | $5/month |
| Pricing model | Unknown | subscription |
| Platforms | Linux, Virtual Environments | Windows, Linux, Web |
| Founded | 2011 | 2009 |
Identical on both: free tier (No), user rating (Not yet rated), category (Unknown).
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
- Windows Server
- Microsoft 365
Only in Zerto
- Continuous data protection
- Journal-based recovery
- Automated failover
- Non-disruptive testing
- Multi-cloud mobility
- Long-term retention
- AWS
- Azure
Both cover
- VMware
- Hyper-V
- 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
Zerto
- 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
Zerto
- Zerto with Azure is listed on UK G-Cloud as a reseller-managed disaster recovery service, not Zerto's own licence pricing, with OS management from £75 per host per month for the public sector
Pricing, plan by plan
Datto SIRIS
$1095/one-time + recurringNo published plan breakdown. See the Datto SIRIS review.
Zerto
$5/month- Zerto Enterprise Cloud$5/month
- Continuous protection
- Journal-based recovery
- Multi-cloud mobility
Which should you pick?
Choose Datto SIRIS if
- You need instant virtualization.
- You work on Linux, Virtual Environments.
- You also want screenshot verification.
Choose Zerto if
- You need continuous data protection.
- You work on Windows, Linux, Web.
- You also want journal-based recovery.
Questions people ask
- Is Datto SIRIS or Zerto better?
- Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and Zerto at $5/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Datto SIRIS or Zerto?
- Datto SIRIS starts at $1095/one-time + recurring and Zerto at $5/month.
- Does Datto SIRIS or Zerto run on more platforms?
- Datto SIRIS runs on Linux, Virtual Environments. Zerto runs on Windows, Linux, Web.
- 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 Zerto cannot?
- Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology. Zerto covers Continuous data protection, Journal-based recovery, Automated failover, Non-disruptive testing. Both handle VMware, Hyper-V, 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.
SourceDatto 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.
SourceDatto 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.
SourceDatto 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.
SourceRelated pages
More on Datto SIRIS
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- Zerto vs OwnBackup
- Zerto vs Veeam Backup & Replication
- Zerto vs Carbonite
- Zerto vs Backblaze
- Zerto vs Barracuda Backup
- Zerto vs Arq Backup
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- Zerto vs Box
- Zerto vs IDrive
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