Local users and groups (LUG) is the ability to create user accounts that are local to a Vserver. Authentication and Authorization can be done by using the local users and groups, usually in extreme si...Local users and groups (LUG) is the ability to create user accounts that are local to a Vserver. Authentication and Authorization can be done by using the local users and groups, usually in extreme situations. LUG has been supported since Data ONTAP 8.2 and later. How to enable LUG in Data ONTAP 8.2+ and ONTAP 9? Enabling or disabling local users and groups: How to create a local user to access a CIFS share?