Permissions

TrueNAS offers two Access Control List (ACL) types: POSIX (the TrueNAS default) and NFSv4. For a more in-depth explanation of ACLs and configurations in TrueNAS, see our ACL Primer.

The Dataset Preset option on the Add Dataset screen sets the ACL type applied for SMB shares, apps, multi-protocol shares, and general-use datasets.

The ACL Type setting in the Advanced Options on both the Add Dataset and Edit Dataset screens, determines the ACL presets available on the ACL Select a preset ACL window. It also determines which permissions editor screens you see after you click the edit edit icon on the Dataset Permissions widget.