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Software · head to head

Datto SIRIS vs TrueNAS

Datto SIRIS logo

Datto SIRIS

Software

All-in-one business continuity and disaster recovery

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

TrueNAS

Software

Open-source ZFS storage operating system for network-attached storage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only TrueNAS has a free tier, so it costs nothing to try first.
  • Each has a real cost: Datto SIRIS requires on-premises appliance, not purely cloud-native; TrueNAS requires self-hosting on x86 hardware, no managed cloud offering; organisations must provision, configure, and maintain their own infrastructure

Where they differ

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

Attributes where Datto SIRIS and TrueNAS differ
AttributeDatto SIRISTrueNAS
Starting price$1095/one-time + recurringFree
Pricing modelUnknownopen-source
Free tierNoYes
PlatformsLinux, Virtual EnvironmentsSelf-hosted, Linux, Web, API
Founded2011Unknown

Identical on both: 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
  • VMware
  • Hyper-V

Only in TrueNAS

Nothing recorded that Datto SIRIS does not also cover.

What people use each for

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

Datto SIRIS

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

TrueNAS

  • On-premises backup and archival storage for enterprisesnot Datto SIRIS
  • Home lab and small business network-attached storagenot Datto SIRIS
  • Media server storage for video, photo, and document librariesnot Datto SIRIS
  • Disaster recovery and business continuity replicationnot Datto SIRIS
  • S3-compatible object storage for cloud-native applicationsnot Datto SIRIS
  • High-availability storage clusters for datacentresnot 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

TrueNAS

  • Requires self-hosting on x86 hardware, no managed cloud offering; organisations must provision, configure, and maintain their own infrastructure
  • ZFS filesystem entails high memory requirements (1 GB RAM per 1 TB of storage recommended), increasing costs for large deployments
  • Limited ARM/embedded support; Community Edition is primarily x86-64, reducing deployment options for edge installations
  • Clustering and replication setup requires operational expertise; misconfiguration can lead to data loss
  • Enterprise support and SLA guarantees require paid subscriptions; Community Edition relies on peer-based forums

Pricing, plan by plan

Datto SIRIS

$1095/one-time + recurring

No published plan breakdown. See the Datto SIRIS review.

TrueNAS

Free

No published plan breakdown. See the TrueNAS review.

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 TrueNAS if

  • You want to start without paying.
  • You work on Self-hosted, Linux, Web, API.
TrueNAS review

Questions people ask

Is Datto SIRIS or TrueNAS better?
Neither clearly leads. Datto SIRIS starts at $1095/one-time + recurring and TrueNAS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Datto SIRIS or TrueNAS?
TrueNAS has a free tier; the other does not. Paid plans start at $1095/one-time + recurring for Datto SIRIS and Free for TrueNAS.
Does Datto SIRIS or TrueNAS run on more platforms?
Datto SIRIS runs on Linux, Virtual Environments. TrueNAS runs on Self-hosted, Linux, Web, API.
Can I use TrueNAS for free?
Yes. TrueNAS has a free tier, so you can try it without paying. Datto SIRIS starts at $1095/one-time + recurring.
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 TrueNAS is typically brought in for.
What can Datto SIRIS do that TrueNAS cannot?
Datto SIRIS covers Instant virtualization, Screenshot verification, Ransomware detection, Inverse chain technology.

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
TrueNAS: What is the cost of TrueNAS Community Edition?

TrueNAS Community Edition is free and open-source. There are no licensing fees, but organisations must purchase and maintain their own x86 hardware. Enterprise Edition requires paid support contracts for production environments.

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
TrueNAS: Can I replicate TrueNAS data between sites?

Yes. TrueNAS supports snapshot-based replication over network links, enabling disaster recovery and business continuity. Replication can occur between Community Edition systems or between Enterprise Appliances.

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
TrueNAS: What storage protocols does TrueNAS support?

TrueNAS simultaneously supports NFS (network file system), SMB (Windows file sharing), iSCSI (block storage), and S3-compatible object storage, all from the same storage pool.

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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