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  1. 24.10 (Electric Eel)
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  3. Getting Started
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  5. CORE to SCALE Migrations
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TrueNASTrueNAS Stable Version Documentation
This content follows TrueNAS 24.10 (Electric Eel) releases. Use the Product and Version selectors above to view content specific to a different software release.

CORE to SCALE Migrations

  2 minute read.

This section provides information and instructions for TrueNAS CORE users wanting to migrate to SCALE.

TrueNAS users wanting to migrate from 13.0-U6 (latest) or 13.3 to TrueNAS 24.10 or later can migrate to 24.04 and earlier using the UI, but must clean install if migrating to later releases. Attempting to migrate directly to 24.10 or later releases fail and cannot be done.

Download a copy of the iso for the latest maintenance release of 24.10 or earlier, then follow the migration instructions in this Getting Started section of the TrueNAS Documentation Hub to move from the FreeBSD-based version of TrueNAS to the Linux Debian-based version of TrueNAS.

Linux treats device names differently than FreeBSD so please read Component Naming for more information.

After migration, review each area of the UI that was previously configured in CORE.

Migration Articles

  • Preparing to Migrate: Guides CORE users through preparation elements and steps before beginning the one-way CORE to SCALE migration process.

    • Migrating TrueNAS CORE to SCALE: Provides instructions on migrating from TrueNAS CORE to SCALE. Migration methods include using an ISO or manual update file.

      • Enterprise HA Migrations: Discusses migrating a TrueNAS CORE High Availability (HA) system to SCALE.

        • Component Naming: Provides information on disk and interface naming changes related to the change from FreeBSD storage and sharing in CORE to Linux in TrueNAS SCALE.