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Backup · head to head

Clumio vs Datto SIRIS

Clumio logo

Clumio

Backup

Serverless AWS backup with published per-gigabyte rates and explicit restore charges

From
$0.01/month
Rated
-
Full reviewWebsite
Datto SIRIS logo

Datto SIRIS

Backup

All-in-one business continuity and disaster recovery

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

The short version

  • Each has a real cost: Clumio restore is charged at $0.040 per GiB plus data transfer out, so recovering a hundred terabytes in an incident costs thousands of dollars on top of the storage fee, a bill nobody budgets for.; Datto SIRIS requires on-premises appliance, not purely cloud-native
  • They diverge on capability: Clumio covers Air-gapped backups, Datto SIRIS covers Instant virtualization.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Clumio and Datto SIRIS differ
AttributeClumioDatto SIRIS
Starting price$0.01/month$1095/one-time + recurring
Pricing modelPer GiB-month protectedUnknown
PlatformsWeb, APILinux, Virtual Environments
FoundedUnknown2011

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 Clumio

  • Air-gapped backups
  • Fifteen-minute recovery points
  • S3 SecureVault
  • Backtrack
  • Terraform provider
  • Compliance attestations

Only in Datto SIRIS

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

What people use each for

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

Clumio

  • An AWS-native company needing backups outside its own account so a compromised root credential cannot delete themnot Datto SIRIS
  • A team that has to model recovery cost before an incident rather than discover it during onenot Datto SIRIS
  • An organisation protecting billions of S3 objects where per-object charges dominate per-gigabyte chargesnot Datto SIRIS
  • A regulated business needing SOC 2, HIPAA and PCI-DSS attested backup without running backup serversnot Datto SIRIS

Datto SIRIS

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

Where each one falls short

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

Clumio

  • Restore is charged at $0.040 per GiB plus data transfer out, so recovering a hundred terabytes in an incident costs thousands of dollars on top of the storage fee, a bill nobody budgets for.
  • Per-object charges of $1.50 per million managed objects per month mean estates with billions of small objects pay far more than a per-gigabyte estimate suggests.
  • The archive tier is cheaper to store but restores begin only after 24 to 48 hours, which is incompatible with most recovery time objectives, and early deletion inside six months incurs a fee.
  • It is an AWS product; Azure workloads are on the roadmap rather than shipping, so multi-cloud organisations still need a second backup platform.
  • The Commvault acquisition means Clumio now overlaps with Commvault own cloud protection, and buyers should ask directly how the two portfolios converge before signing multi-year terms.

Datto SIRIS

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

Pricing, plan by plan

Clumio

$0.01/month
  • S3 SecureVault Standard$0.025/month
    • $0.025 per GiB-month plus $1.50 per million managed objects per month
    • Restores $0.040 per GiB instant access and $0.09 per GiB retrieved
    • $0.025 per 1,000 API requests, data transfer out charged separately
  • S3 SecureVault Archive$0.01/month
    • $0.010 per GiB-month plus $1.50 per million managed objects per month
    • Restores begin after 24 to 48 hours
    • $0.040 per GiB restored plus data transfer out
  • Backtrack$undefined/month
    • $1.50 per million managed objects-month, included free with SecureVault
    • $0.50 per million objects processed on restore
    • Metadata change tracking rather than full backup

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Which should you pick?

Choose Clumio if

  • You need air-gapped backups.
  • You work on Web, API.
  • You also want fifteen-minute recovery points.
Clumio review

Choose Datto SIRIS if

  • You need instant virtualization.
  • You work on Linux, Virtual Environments.
  • You also want screenshot verification.
Datto SIRIS review

Questions people ask

Is Clumio or Datto SIRIS better?
Neither clearly leads. Clumio starts at $0.01/month and Datto SIRIS at $1095/one-time + recurring, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Clumio or Datto SIRIS?
Clumio starts at $0.01/month and Datto SIRIS at $1095/one-time + recurring.
Does Clumio or Datto SIRIS run on more platforms?
Clumio runs on Web, API. Datto SIRIS runs on Linux, Virtual Environments.
What is Clumio best used for?
Clumio is most often used for an aws-native company needing backups outside its own account so a compromised root credential cannot delete them, a team that has to model recovery cost before an incident rather than discover it during one, an organisation protecting billions of s3 objects where per-object charges dominate per-gigabyte charges, a regulated business needing soc 2, hipaa and pci-dss attested backup without running backup servers. Of those, an aws-native company needing backups outside its own account so a compromised root credential cannot delete them and a team that has to model recovery cost before an incident rather than discover it during one are not what Datto SIRIS is typically brought in for.
What can Clumio do that Datto SIRIS cannot?
Clumio covers Air-gapped backups, Fifteen-minute recovery points, S3 SecureVault, Backtrack. Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology.

Answered from the vendors’ own pages

Clumio: What does a restore cost?

$0.040 per GiB for instant access, $0.09 per GiB retrieved from archive, $0.025 per 1,000 API requests, plus AWS data transfer out. Model this before an incident.

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
Clumio: Does it support Azure?

Not yet. Azure workloads are listed as on the roadmap. Today it is AWS, with some Google Cloud Storage coverage.

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
Clumio: Is it still Clumio after the Commvault acquisition?

Yes, sold as Clumio by Commvault with its own pricing page and product line, but ask about portfolio convergence on a multi-year deal.

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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