Yes. There are two (2) policy perspectives with ViPR: 1. a tenant perspective and 2. a provider perspective. The hierarchy from a tenant perspective is: tenant -> subtenant -> project -> storage resource (block volume, file system, or object key pool). The hierarchy from a provider/landlord perspective is: virtual data center -> virtual storage array/pool -> physical storage array/pool. By design, these policy items are independent, with no notion of overriding policy at a lower/higher level; that type of behavior makes systems very complicated to understand applicable policies at any node in the hierarchy (for example: trying to understanding who has access to what for Windows file systems). Systems designed for cloud such as ViPR tend to be flatter.
Is there a policy hierarchy in ViPR?
ViPR Policies