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File Storage · head to head

TrueNAS vs VAST Data

TrueNAS logo

TrueNAS

File Storage

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

From
Free
Rated
-
Full reviewWebsite
VAST Data logo

VAST Data

File Storage

All-flash storage designed to make hard disk tiers unnecessary

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only TrueNAS has a free tier, so it costs nothing to try first.
  • Each has a real cost: TrueNAS requires self-hosting on x86 hardware, no managed cloud offering; organisations must provision, configure, and maintain their own infrastructure; VAST Data data reduction ratios drive the economics, and datasets that are already compressed, such as media or encrypted files, reduce poorly and destroy the cost per terabyte case.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which TrueNAS and VAST Data actually diverge.

Attributes where TrueNAS and VAST Data differ
AttributeTrueNASVAST Data
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsSelf-hosted, Linux, Web, APILinux

Identical on both: user rating (Not yet rated), category (File Storage).

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 TrueNAS

Nothing recorded that VAST Data does not also cover.

Only in VAST Data

  • Disaggregated architecture
  • Similarity-based reduction
  • All-flash single tier
  • Multi-protocol access
  • Wide erasure coding
  • GPU-oriented throughput
  • Snapshots and replication

What people use each for

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

TrueNAS

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

VAST Data

  • A GPU training cluster where storage throughput, not compute, is the bottleneck on job completionnot TrueNAS
  • A genomics group holding petabytes of sequencing output that must stay immediately readable rather than archived to tapenot TrueNAS
  • A quantitative finance team running backtests over historical market data that a disk tier cannot serve fast enoughnot TrueNAS
  • An organisation consolidating a fast tier and an archive tier into one system to reduce rack space and power drawnot TrueNAS

Where each one falls short

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

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

VAST Data

  • Data reduction ratios drive the economics, and datasets that are already compressed, such as media or encrypted files, reduce poorly and destroy the cost per terabyte case.
  • There is a minimum viable cluster size, so the entry cost is high and the platform is not sensible for a small footprint however attractive the architecture is.
  • Pricing is quoted against effective capacity after reduction, which means the price you signed depends on an assumption about your own data that only becomes measurable after deployment.
  • The platform has expanded into database and data catalogue functions, which broadens the roadmap but means buyers evaluating it as a file system must be careful not to be sold an adjacent product they will not use.
  • As a relatively young vendor in a market of long-lived incumbents, buyers with ten year retention requirements should press on long term support commitments and hardware availability rather than assume them.

Pricing, plan by plan

TrueNAS

Free

No published plan breakdown. See the TrueNAS review.

VAST Data

On request
  • VAST Data Platform$undefined/year
    • Priced per usable capacity after data reduction
    • Hardware and software sold together or via certified partners
    • Subscription and capital purchase options

Which should you pick?

Choose TrueNAS if

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

Choose VAST Data if

  • You need disaggregated architecture.
  • You work on Linux.
  • You also want similarity-based reduction.
VAST Data review

Questions people ask

Is TrueNAS or VAST Data better?
Neither clearly leads. TrueNAS starts at Free and VAST Data at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, TrueNAS or VAST Data?
TrueNAS has a free tier; the other does not. Paid plans start at Free for TrueNAS and On request for VAST Data.
Does TrueNAS or VAST Data run on more platforms?
TrueNAS runs on Self-hosted, Linux, Web, API. VAST Data runs on Linux.
Can I use TrueNAS for free?
Yes. TrueNAS has a free tier, so you can try it without paying. VAST Data starts at On request.
What is TrueNAS best used for?
TrueNAS is most often used for on-premises backup and archival storage for enterprises, home lab and small business network-attached storage, media server storage for video, photo, and document libraries, disaster recovery and business continuity replication. Of those, on-premises backup and archival storage for enterprises and home lab and small business network-attached storage are not what VAST Data is typically brought in for.
What can TrueNAS do that VAST Data cannot?
VAST Data covers Disaggregated architecture, Similarity-based reduction, All-flash single tier, Multi-protocol access.

Answered from the vendors’ own pages

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
VAST Data: Do we still need an archive tier?

That is the central claim, and it holds when your data reduces well. Run a reduction assessment on your actual dataset before accepting the economics.

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
VAST Data: How is capacity priced?

On usable capacity after data reduction, quoted rather than published. That makes the reduction ratio assumption the most important number in the contract.

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
VAST Data: Is it suitable for a small deployment?

No. There is a minimum cluster size and the entry cost reflects it. Small footprints are better served elsewhere.

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