ISO/IEC 14776-413:2007 PDF

Name: ISO/IEC 14776-413:2007 — Information technology — Small Computer System Interface (SCSI) — Part 413: SCSI Architecture Model -3 (SAM-3)
SKU: ISO/IEC 14776-413:2007
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Information technology — Small Computer System Interface (SCSI) — Part 413: SCSI Architecture Model -3 (SAM-3)

Название (английский):

ISO/IEC 14776-413:2007

Information technology — Small Computer System Interface (SCSI) — Part 413: SCSI Architecture Model -3 (SAM-3)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 110
Дата публикации:: 21 февраля 2007 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 is designed to provide an efficient peer-to-peer I/O bus with the maximum number of hosts and peripherals determined by the bus width (8 or 16). This International Standard defines a reference model that specifies the behaviour and abstract structure generic to all SCSI I/O system implementations.

Abstract

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Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 14776-413:2007 - "Information technology - Small Computer System Interface (SCSI) - Part 413: SCSI Architecture Model‑3 (SAM‑3)" defines a reference architecture for the SCSI protocol family. The standard describes the abstract structure and expected behaviour common to all SCSI I/O system implementations for peer‑to‑peer host/peripheral communications (bus widths of 8 or 16 are supported). SAM‑3 provides the model used by SCSI device vendors, operating system developers, and storage architects to design interoperable SCSI software and firmware components.

Key Topics

SCSI architecture model: distributed service model, client–server model, structural and domain models, and the service delivery subsystem.

SCSI devices and ports: definitions for initiator, target, and target/initiator devices; multi‑port devices; port identifiers and port naming conventions.

Logical units and LUN addressing: logical unit concepts, minimum LUN addressing, single‑level and extended LUN structures, well‑known LUNs and addressing methods.

Command model: Execute Command procedure, Command Descriptor Block (CDB) handling, status codes and precedence, and command lifetimes.

Data transfer services: transport protocol services for Execute Command, Data‑In/Data‑Out delivery, and terminate data transfer mechanisms.

Task and task management: task tags, lifetimes, abort mechanisms, task management functions (ABORT TASK, ABORT TASK SET, CLEAR ACA, LOGICAL UNIT RESET, etc.).

Exception handling: CHECK CONDITION handling, Auto Contingent Allegiance (ACA), overlapped commands, sense data, Unit Attention conditions.

Events and notifications: SCSI events overview, event‑triggered Unit Attention conditions, and event notification transport services.

Nexus model: relationships among initiator/target ports and logical units (I_T nexus), and models for dependent logical units.

Applications

Implementing SCSI stacks in firmware, device drivers, and storage controllers.

Designing SCSI target devices (disk arrays, tape libraries, SAN endpoints) and multi‑port device behavior.

Defining LUN addressing and interoperability rules for storage provisioning and virtualization.

Developing OS kernel I/O subsystems and transport layers that conform to SCSI task and event semantics.

Creating test suites and compliance tools for SCSI implementations.

Related standards

Part of the ISO/IEC 14776 SCSI standards series; SAM‑3 complements other SCSI transport and command set documents used to define complete SCSI implementations.

Keywords: ISO/IEC 14776-413:2007, SCSI, SAM-3, SCSI Architecture Model, Small Computer System Interface, LUN addressing, task management, CDB, Auto Contingent Allegiance.

ISO/IEC 14776-413:2007 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Who uses it

Related standards

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