NetApp
Vserver : Storage > Qtrees : Understanding qtrees : Qtree options
Qtree options
You must specify the following when creating a qtree: a name for the qtree and the volume in which the qtree resides. By default, the security style of a qtree is the same as that for the root directory of the volume. By default, oplocks are enabled for each qtree. If you disable oplocks for the entire storage system, oplocks are not set even if you enable oplocks on a per-qtree basis.
Related concepts 
Qtree name restrictions
About the CIFS oplocks setting
Security styles

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