You can use groups predefined by Data ONTAP or create or modify a group.
You can assign a user or domain user to a predefined set of groups and roles provided by Data ONTAP. The predefined groups include Administrators, Power Users, Compliance Administrators, Backup Operators, Users, Guests, and Everyone.
Loading groups from the lclgroups.cfg file
When groups are created, they are placed in the lclgroups.cfg file. Normally, this file is for administrative reference only. It is not used to reload groups into the system memory. However, sometimes you need Data ONTAP to reload this file, for example, when you are migrating a storage system or a vFiler unit.