TrueNAS SCALETrueNAS SCALE Nightly Development Documentation
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Component Naming

TrueNAS SCALE incorporates all the major TrueNAS CORE storage and sharing features with a web interface based on Debian GNU/Linux. Because SCALE shares the same UI as the FreeBSD-based TrueNAS CORE, users might notice there are similarities. However, SCALE does incorporate some differences, primarily in component naming.

TrueNAS SCALE automatically renames components, such as disks and interfaces, migrated from TrueNAS CORE, but does not modify the component Description. For example, the Name of an interface identified as igb0 in TrueNAS CORE is updated to eno1 after migration to TrueNAS SCALE, but the Description igb0 is retained. This difference is purely cosmetic and does not affect functionality.


TrueNAS Core utilizes a numerical listing of drives in a system.


TrueNAS SCALE uses a lettered format for drive identification.


SCALE still labels NVMe drives with a numeric value.


TrueNAS CORE enumerates interface names using interface drivers, such as igb for Intel devices, followed by a number. TrueNAS CORE Enterprise systems use ix followed by a number.


TrueNAS SCALE enumerates interface names using PCI locations. By default, SCALE systems identify their network ports with eno or enp followed by a number.


TrueNAS CORE identifies bonded interfaces or link aggregations with lagg followed by a number (lagg1). TrueNAS SCALE uses bond followed by a number (bond1).

See the TrueNAS Systems section for lists of the default port names for each platform.