Overview
ISO/IEC 14776-415:2019 - SCSI Architecture Model - 5 (SAM-5) - is part of the ISO/IEC SCSI family that defines the architecture, service models, classes and behaviors for SCSI-based storage systems. The published table of contents and clauses show this standard focuses on the SCSI distributed service and client-server models, detailed class definitions (Device, Port, Target/Initiator Port, Logical Unit, Task Manager, Task Router, etc.), operations, state machines, UML notation, and conventions for numeric, bit/byte and character encodings.
Note: the scope text you provided refers to PHY/MAC specifications for high‑rate wireless connectivity (>200 Mbps), which appears inconsistent with the SAM‑5 title and contents. If your goal is SCSI architecture guidance, rely on the SAM‑5 content; if you intended a wireless PHY/MAC standard, please confirm the correct reference.
Key topics and technical requirements
- SCSI architecture and compliance: Overview of compliance requirements and the SCSI distributed service model.
- Client-server and structural models: Rules for server request/response ordering and synchronizing client/server changes.
- Class definitions and attributes: Formal object classes such as SCSI Device, SCSI Port, Target/Initiator Port, Logical Unit (LUN), Task Manager, Task Router, and their attributes and operations.
- Operations and behaviors: Command and task management operations (Send Command, Send Task Management Request, Data-In/Out, Terminate Data Transfer, Route Command, etc.).
- State machines and UML conventions: State machine behavior, transitions, timers/counters, and UML notation for modeling SCSI components.
- Data conventions: Bit/byte ordering, numeric and character encoding rules, and procedure-call notation.
- Testing and interoperability considerations: Defined behaviors that support conformance testing and multi-vendor interoperability.
Applications and who uses it
- Storage firmware and device vendors implementing SCSI targets and initiators.
- Operating system and driver developers integrating SCSI interfaces.
- Storage array architects and OEMs designing multi‑port and hierarchical logical units.
- Interoperability/test labs and QA teams validating SCSI behavior, task management and ordering.
- Architects defining management and copy services that rely on standardized SCSI semantics.
Related standards
- Other parts of the ISO/IEC 14776 SCSI series (SAM family).
- Companion SCSI specifications (e.g., SCSI Primary Commands and storage device class standards) - consult the ISO/IEC catalog for exact cross‑references.
ISO/IEC 14776-415 (SAM‑5) is principally a normative, architecture-level specification that helps ensure consistent SCSI behavior across implementations, enabling reliable storage command handling, task management, and multi‑port device interoperability.
Open preview (PDF)Information technology — Small computer system interface (SCSI) — Part 415: SCSI architecture model - 5 (SAM-5)
