Virtual storage architecture guide (VSAG)

The VSAG expands on the virtual storage concepts of the IEEE Mass Storage Systems Reference Model (MSSRM), version 5. The intended outcome of the VSAG is to provide a framework for the VSS standard that will enable software vendors to develop and deploy interoperable virtual storage management products. The VSAG provides a model for: a single storage image of diverse technologies in a multivendor network of storage devices; interoperability with other OSSI components and relevant IEEE, ISO, and ANSI standards; adapting to various existing and anticipated data management clientele. The VSAG envisions a single storage image of diverse device technologies in a multivendor network. The VSAG also promotes the automation of routine storage management tasks, permits reconfiguration of network storage as needs change, and supports common points of administration for accounting, availability, configuration, performance, recovery, and security. The scope of the VSAG includes: definition of virtual objects that reside in persistent storage; framework for software interfaces and protocols; model for servers of various types interacting within a single network. The scope of the VSAG excludes: detail specification of interfaces; specification of specific functional requirements and dependencies; discussion of algorithms, protocols, and physical media formats.