Share and Storage Management
Start Share and Storage Management.
In the Share and Storage Management console, in the details pane, click the Shares tab, and then click <share_name> (where share_name is the name of the NFS share).
In the Actions pane, click Properties.
The <share_name> Properties dialog box displays.
In the <share_name> Properties dialog box, on the NFS Authentication tab, select the Enable unmapped user access check box.
On the NFS Authentication tab, click Allow unmapped UNIX user access, and then click OK.
Close the Share and Storage Management console.