The Linux-based TrueNAS OS incorporates all the major FreeBSD-based TrueNAS storage and sharing features with a web interface based on Debian GNU/Linux. Users might notice similarities between the Linux-based TrueNAS UI and the FreeBSD-based TrueNAS UI. However, the switch from FreeBSD to Linux results in some differences, primarily in component naming.

TrueNAS automatically renames components, such as disks and interfaces, migrated from TrueNAS 13.0 (or 13.3 for community users), but does not modify the component Description. For example, the Name of an interface identified as igb0 in TrueNAS 13 is updated to eno1 after migration to TrueNAS 24.04, but the Description igb0 is retained. This difference is purely cosmetic and does not affect functionality.

This content is obsolete and no longer relevant to TrueNAS users. Please refer to major version release notes for updates concerning ZFS feature flags.

On March 20, 2024, the TrueNAS team announced that the FreeBSD-based TrueNAS CORE platform has entered “sustaining engineering phase within the TrueNAS project.”

With this transition, TrueNAS 13.0 continues to receive bug fixes related to stability and security. New feature development and component improvement continues on Linux-based TrueNAS versions.

TrueNAS 13.3-U1.2, released April 29, 2025, is the final release for the TrueNAS CORE 13.3 software train. We encourage TrueNAS 13.3 users to explore our newest TrueNAS Community Edition (25.04 or later) solutions. If any security or data integrity issues do arise in 13,3-U1.2, we will notify the Community of these. The expected resolution will be in the TrueNAS Community Edition.

Users of TrueNAS 24.04 (Dragonfish) or newer can migrate data from a third-party NAS solution onto TrueNAS using the Syncthing Enterprise application. The Syncthing Enterprise application can mount remote SMB shares in a manner that preserves relevant metadata. TrueNAS 24.10 (Electric Eel) also adds migration support for SMB alternate data streams (ADS), used to store application-specific metadata.

TrueNAS Enterprise

Third-party data ingest is available to TrueNAS Enterprise customers with TrueNAS 24.04 (Dragonfish) and newer deployed, as well as the appropriate applications license. TrueNAS Enterprise Support staff are available to assist with deploying the Syncthing Enterprise Application and migrating data. Please contact TrueNAS Enterprise Support to learn more and schedule a time to deploy the app and begin migration.

Since the Apple Filing Protocol (AFP) for shares is deprecated and no longer receives updates, it is not present in TrueNAS.