Information technology - SCSI Architecture Model-2 (SAM-2)

This specification defines an abstract model for the Small Computer Systems Interface architecture, providing a structured framework for understanding SCSI protocols and their operational mechanisms. The document outlines the functional relationships between various components within the storage interface environment, ensuring interoperability across diverse hardware platforms. It establishes a comprehensive terminology and conceptual model that facilitates consistent implementation and integration of SCSI technologies in information systems. The content covers the hierarchical structure of command sets, logical units, and transport mechanisms, serving as a reference for developers and engineers designing compliant devices. This work represents a revision cycle of an established framework, incorporating updates to reflect advancements in the field while maintaining backward compatibility. It addresses the evolving needs of data storage systems by refining the architectural descriptions to accommodate modern requirements. The text focuses on the theoretical underpinnings and structural definitions rather than specific implementation details or performance metrics, offering a neutral baseline for the industry.