Dell PowerVault 720N Command Reference Manual page 184

-root= list ,-access= list ,-ro= list ,-rw= list
-root -access -ro -rw
-root=adminhost:administrators,-rw=blender:pcusers:123.45.67.0/
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/vol/vol0 -root=adminhost
/vol/vol0/home -root=adminhost,-rw=blender:mixer