When you create and attach a new fileset to the global namespace, the fileset is owned by user Anonymous. A UNIX® root user or a Windows® administrator user must change the ownership and permissions of the fileset before the fileset is usable. (You must do this for the FlashCopy® directory and the lost+found directory under the fileset root.) You need to make these changes only once in the lifetime of a fileset. The changed permissions are persistent across metadata server restarts and whenever the fileset is detached or attached.
Unlike the requirement for the global fileset, a UNIX or Windows user can own a fileset exclusively. The fileset is not required to have write permissions for both UNIX and Windows domains.
Parent topic: Filesets
Parent topic: How should I organize my global namespace?