ISO/IEC 14776-412:2006 PDF

Name: ISO/IEC 14776-412:2006 — Information technology — Small Computer System Interface (SCSI) — Part 412: Architecture Model -2 (SAM-2)
SKU: ISO/IEC 14776-412:2006
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Information technology — Small Computer System Interface (SCSI) — Part 412: Architecture Model -2 (SAM-2)

Название (английский):

ISO/IEC 14776-412:2006

Information technology — Small Computer System Interface (SCSI) — Part 412: Architecture Model -2 (SAM-2)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 98
Дата публикации:: 7 ноября 2006 г.
Издание:: ISO/IEC IS 14776 edition 1 version 1
ICS:: 35.200

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Описание (английский):

The Small Computer System Interface (SCSI) protocol provides an efficient peer-to-peer I/O bus with the maximuim number of hosts and peripherals determined by the bus width (8 or 16). This International Standard specifies common behaviours for SCSI devices.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 14776-412:2006 - Information technology - Small Computer System Interface (SCSI) - Part 412: Architecture Model‑2 (SAM‑2) defines the SCSI architecture model and common behaviors for SCSI devices. The standard describes how SCSI implements a peer‑to‑peer I/O bus (bus width options noted in the scope are 8 or 16), the distributed client‑server service model, device and port abstractions, and the expected lifecycles for commands, tasks and task management functions. It is foundational for ensuring consistent SCSI device behavior and interoperability.

Key Topics and Requirements

SCSI architecture and models

Distributed service model, client‑server model and structural model
SCSI domain and service delivery subsystem behaviors

Device, port and naming conventions

Definitions for initiator, target, target/initiator devices, ports, and SCSI names
Multiple‑port device models and views for initiators/targets

Logical units and addressing

Logical unit concepts, LUN formats and addressing methods (single‑level, eight‑byte, extended, well‑known)

Command and data transfer model

Execute Command semantics, Command Descriptor Block (CDB) format, OPERATION CODE and CONTROL byte considerations
Data‑In / Data‑Out transfer services and request/response ordering

Status, sense data and exception handling

Status codes, precedence rules, autosense and asynchronous event reporting
Handling of contingency conditions such as Contingent Allegiance (CA) and Auto Contingent Allegiance (ACA)

Tasks and task management

Task object model, tags, task lifetimes, abort/clear/reset functions, task management protocol services

Task set management

Task states, events, and mechanisms for controlling and synchronizing task sets across initiators/targets

Applications and Who Uses This Standard

Storage device vendors and firmware engineers implement SCSI target/initiator behavior, multi‑port support and LUN addressing.

System architects and OS developers use SAM‑2 to ensure correct command processing, task management and error handling.

SAN/NAS integrators and storage array designers rely on the architecture model for interoperability and multi‑host environments.

Compliance testers and QA teams reference the standard for conformance testing and interoperability validation between SCSI components.

Related Standards

SAM‑2 is part of the broader ISO/IEC 14776 SCSI family and complements SCSI command‑set and transport specifications (command standards, transport protocols and physical layer documents) that together define full SCSI implementations.

Keywords: ISO/IEC 14776-412:2006, SAM-2, SCSI architecture model, SCSI devices, logical unit numbers, CDB, task management, SCSI command model, SCSI interoperability.

ISO/IEC 14776-412:2006 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications and Who Uses This Standard

Related Standards

Технические детали

BS ISO/IEC 14776-323:2017

Information technology. Small computer system interface (SCSI). SCSI Block Commands. 3 (SBC-3).

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