When should you use hierarchical zones?
For most organizations, Centrify recommends that you use hierarchical zones for all new zones that you create. Hierarchical zones provide greater flexibility to inherit profile information, rights and role definitions, and user and group role assignments.
Because hierarchical zones allow you to share or override information at any point in the hierarchy, they also allow you to design a simpler zone structure than classic zones and support an easier deployment model. Typically, a simpler zone structure is easier to manage, but hierarchical zones also allow you to implement a very sophisticated zone structure to address complex access control rules, if you so choose.