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Software · head to head

Backblaze vs Datto SIRIS

Backblaze logo

Backblaze

Software

Unlimited cloud backup at an affordable price

From
$9/month
Rated
-
Full reviewWebsite
Datto SIRIS logo

Datto SIRIS

Software

All-in-one business continuity and disaster recovery

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

The short version

  • Each has a real cost: Backblaze personal Backup is $99 a year billed annually, with no monthly option; Datto SIRIS requires on-premises appliance, not purely cloud-native
  • They diverge on capability: Backblaze covers Unlimited backup, Datto SIRIS covers Instant virtualization.

Where they differ

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

Attributes where Backblaze and Datto SIRIS differ
AttributeBackblazeDatto SIRIS
Starting price$9/month$1095/one-time + recurring
PlatformsWindows, macOS, WebLinux, Virtual Environments
Founded20072011

Identical on both: pricing model (Unknown), 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 Backblaze

  • Unlimited backup
  • Continuous backup
  • Version history
  • Private encryption key
  • Restore by mail
  • Mobile apps
  • macOS
  • Windows

Only in Datto SIRIS

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

Both cover

  • Windows support
  • Web support

What people use each for

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

Backblaze

  • Unlimited backup of a personal computer and external drivesnot Datto SIRIS
  • Restoring files from anywhere through the webnot Datto SIRIS
  • Mailed hard drive restore for large recoveriesnot Datto SIRIS
  • Private encryption key control for sensitive datanot Datto SIRIS

Datto SIRIS

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

Where each one falls short

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

Backblaze

  • Personal Backup is $99 a year billed annually, with no monthly option
  • Web restores are capped at 500GB per request
  • Forever version history is a Business tier add-on rather than included
  • Administrative controls and SSO are Business features
  • Backs up user data from a computer and attached drives, so NAS and server backup are not covered by the personal plan

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

Backblaze

$9/month
  • Personal Backup$9/month
    • Unlimited storage for single computer
    • Unlimited version history
    • 30-day trial
  • B2 Cloud Storage$6/TB/month
    • S3-compatible storage
    • Pay-as-you-go model

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

Which should you pick?

Choose Backblaze if

  • You need unlimited backup.
  • You work on Windows, macOS, Web.
  • You also want continuous backup.
Backblaze 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 Backblaze or Datto SIRIS better?
Neither clearly leads. Backblaze starts at $9/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, Backblaze or Datto SIRIS?
Backblaze starts at $9/month and Datto SIRIS at $1095/one-time + recurring.
Does Backblaze or Datto SIRIS run on more platforms?
Backblaze runs on Windows, macOS, Web. Datto SIRIS runs on Linux, Virtual Environments.
What is Backblaze best used for?
Backblaze is most often used for unlimited backup of a personal computer and external drives, restoring files from anywhere through the web, mailed hard drive restore for large recoveries, private encryption key control for sensitive data. Of those, unlimited backup of a personal computer and external drives and restoring files from anywhere through the web are not what Datto SIRIS is typically brought in for.
What can Backblaze do that Datto SIRIS cannot?
Backblaze covers Unlimited backup, Continuous backup, Version history, Private encryption key. Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology. Both handle Windows support, Web support.

Answered from the vendors’ own pages

Backblaze: What is the pricing for Backblaze Personal Backup?

Backblaze Personal Backup costs $9/month on monthly billing or $8.25/month when billed annually, providing unlimited storage for a single computer.

Source
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
Backblaze: What storage options does Backblaze B2 offer?

Backblaze B2 Cloud Storage is priced at $6/TB per month with a pay-as-you-go model, and is S3 compatible for flexible cloud storage.

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
Backblaze: Does Backblaze support Linux systems?

No. Backblaze does not support Linux operating systems, limiting it to Windows, macOS, and web access only.

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
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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