Static and Dynamic Data Models for the Storage Resource Manager v2.2

We present a conceptual model for the Storage Resource Manager, the standard interface adopted for the storage systems of the Worldwide LHC Computing Grid. This model provides a clear and concise definition of the structural and behavioral concepts underlying the interface specification and is meant to support service and application development. Different languages (natural language, UML diagrams, and simple set-theoretic and logical notation) are used to describe different aspects of the model