Information technology - Small computer system interface (SCSI) - Part 346: Zoned Block Commands - 2 (ZBC-2)

This document defines the model and command set extensions to facilitate operation of zoned block devices. The clauses in this document, implemented in conjunction with the applicable clauses of SPC-6 and SBC-5, specify the standard command set for zoned block devices.

Technologies de l'information — Interface de petit système d'ordinateur (SCSI) — Partie 346: Commandes de blocs de zones - 2 (ZBC-2)

General Information

Status
Published
Publication Date
23-Sep-2024
Current Stage
6060 - International Standard published
Start Date
24-Sep-2024
Due Date
16-Feb-2025
Completion Date
24-Sep-2024

Overview

ISO/IEC 14776-346:2024 - "Information technology - Small computer system interface (SCSI) - Part 346: Zoned Block Commands - 2 (ZBC-2)" defines the model and command set extensions needed to operate zoned block devices. Implemented together with the applicable clauses of SPC-6 and SBC-5, this International Standard specifies the standard SCSI command set and behaviors required for interoperable zoned block device operation.

Key topics and technical requirements

This part of the ISO/IEC 14776 series addresses core technical elements required to manage and use zoned block storage:

  • Zoned block device model - formal model describing zones, their lifecycle and constraints.
  • Zone types and conditions - classifications and state machine concepts that govern zone behavior.
  • Zone attributes - metadata and descriptors that identify zone properties and capabilities.
  • Zone operations and actions - command semantics for manipulating zones (for example: open, close, finish, reset and related operations as defined in the standard).
  • Reporting and discovery - mechanisms for reporting zone layout, attributes and status to hosts.
  • Write pointer features - requirements for managing sequential write pointers and rules that affect write ordering and permitted operations.
  • Initialization, allocation and access rules - constraints for read/write and zone lifecycle transitions, including models requiring sequential writes.

These topics are specified as command set extensions and normative behaviors to be applied in conjunction with SPC-6 and SBC-5.

Practical applications and who uses this standard

ISO/IEC 14776-346:2024 is intended for stakeholders who design, implement or integrate zoned block storage:

  • Storage device manufacturers - to implement compliant SCSI command extensions for zoned devices.
  • Firmware and controller developers - to enforce zone models, write pointer rules and command semantics.
  • Operating system and driver authors - to support zoned device discovery, reporting and correct host-side command flows.
  • Storage vendors and integrators - for ensuring interoperability across hosts and devices in data center deployments.
  • Test labs and certification bodies - for interoperability and conformance testing against the ZBC-2 specification.

Adopting the ZBC-2 command set enables reliable, standardized management of zoned block devices and supports ecosystem interoperability.

Related standards

  • SPC-6 (SCSI Primary Commands) - referenced for core SCSI behavior and common command semantics.
  • SBC-5 (SCSI Block Commands) - provides base block command definitions used together with ZBC-2.
  • Other parts of the ISO/IEC 14776 series provide additional SCSI-related specifications.

Keywords: ISO/IEC 14776-346:2024, ZBC-2, Zoned Block Commands, SCSI zoned block devices, SPC-6, SBC-5, zone model, write pointer, zone operations.

Standard

ISO/IEC 14776-346:2024 - Information technology — Small computer system interface (SCSI) — Part 346: Zoned Block Commands - 2 (ZBC-2) Released:24. 09. 2024

English language
141 pages
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Frequently Asked Questions

ISO/IEC 14776-346:2024 is a standard published by the International Organization for Standardization (ISO). Its full title is "Information technology - Small computer system interface (SCSI) - Part 346: Zoned Block Commands - 2 (ZBC-2)". This standard covers: This document defines the model and command set extensions to facilitate operation of zoned block devices. The clauses in this document, implemented in conjunction with the applicable clauses of SPC-6 and SBC-5, specify the standard command set for zoned block devices.

This document defines the model and command set extensions to facilitate operation of zoned block devices. The clauses in this document, implemented in conjunction with the applicable clauses of SPC-6 and SBC-5, specify the standard command set for zoned block devices.

ISO/IEC 14776-346:2024 is classified under the following ICS (International Classification for Standards) categories: 35.200 - Interface and interconnection equipment. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase ISO/IEC 14776-346:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.

Standards Content (Sample)


International
Standard
ISO/IEC 14776-346
First edition
Information technology — Small
2024-09
computer system interface (SCSI) —
Part 346:
Zoned Block Commands - 2 (ZBC-2)
Technologies de l'information — Interface de petit système
d'ordinateur (SCSI) —
Partie 346: Commandes de blocs de zones - 2 (ZBC-2)
Reference number
© ISO/IEC 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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or ISO’s member body in the country of the requester.
ISO copyright office
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO/IEC 2024 – All rights reserved
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Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members
of ISO or IEC participate in the development of International Standards through technical committees
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Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by INCITS (as INCITS 550-2023) and drafted in accordance with its editorial
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the “fast-track procedure”.
A list of all parts in the ISO/IEC 14776 series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-
committees.
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7DEOH±5(6(7:5,7(32,17(5FRPPDQGSURFHVVLQJ
7DEOH±6(48(17,$/,=(=21(FRPPDQG
7DEOH±6(
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ISO/IEC 14776-346:2024は、情報技術における小型コンピュータシステムインターフェース(SCSI)の一部として、ゾーンブロックデバイスの操作を促進するためのモデルとコマンドセットの拡張を定義しています。この文書は、ゾーンブロックデバイスの標準コマンドセットを指定するために、SPC-6およびSBC-5の適用可能な条項と併せて実施される条項を含んでいます。 この標準の強みは、ゾーンブロックデバイスの効率的な運用を支援するために設計されたコマンドセットの明確な定義にあります。特に、ZBC-2の枠組み内で、データのストレージと管理に関する新たなアプローチを提供し、従来のSCSIコマンドに対する追加機能を備えています。これにより、ストレージシステムの性能向上が期待でき、業界全体において一貫した運用が促進されるでしょう。 また、ISO/IEC 14776-346:2024は、ゾーンブロックデバイスの進化に対応するための柔軟性を持っており、今後のテクノロジーの進展にも適応できる構造を持っています。これにより、利用者は最新のストレージ技術を最大限に活用し、効率的なデータ管理が可能になります。 全体として、ISO/IEC 14776-346:2024は、ゾーンブロックデバイスに特化したコマンドセットの標準化を通じて、情報技術分野におけるデータストレージの効率性と一貫性を高める重要な文書であると言えます。

Die Norm ISO/IEC 14776-346:2024 bietet eine umfassende Grundlage für die Implementierung und den Betrieb von zonierten Blockgeräten. Der Schwerpunkt des Dokuments liegt auf der Definition des Modells sowie der Befehlsatz-Erweiterungen, um eine effiziente Nutzung dieser innovativen Speichertechnologie zu gewährleisten. Ein zentrales Merkmal dieser Norm ist die enge Integration der ZBC-2-Befehle mit den relevanten Abschnitten der SPC-6 und SBC-5, wodurch eine kohärente und standardisierte Vorgehensweise bei der Entwicklung und Nutzung von zonierten Blockgeräten gefördert wird. Das Dokument legt klar die Standardbefehle und -operationen fest, die als Grundlage für die Entwicklung neuer Software- und Hardwarelösungen dienen können. Die Stärken von ISO/IEC 14776-346:2024 liegen insbesondere in der Förderung der Interoperabilität zwischen unterschiedlichen Herstellern und Systemen. Dies ist besonders wichtig in einer Zeit, in der die Verwendung zonierter Blockgeräte zunehmend an Bedeutung gewinnt, insbesondere im Kontext von Cloud-Datenspeicherlösungen und großen Datenverarbeitungssystemen. Die Norm bietet nicht nur eine technische Grundlage, sondern trägt auch zur Vereinheitlichung von Praktiken und Prozessen in der Branche bei. Darüber hinaus wird die Flexibilität der zonierten Blockbefehle hervorgehoben, was Entwicklern ermöglicht, maßgeschneiderte Lösungen zu implementieren, die den spezifischen Anforderungen ihrer Benutzer entsprechen. Diese Eigenschaften machen ISO/IEC 14776-346:2024 zu einem unverzichtbaren Dokument für alle Akteure, die im Bereich der Informationstechnologie mit kleinen Computersystemen arbeiten. Zusammenfassend lässt sich sagen, dass die Norm ISO/IEC 14776-346:2024 einen bedeutenden Fortschritt in der Standardisierung von zonierten Blockkommandos darstellt, und somit als Schlüsselressource für die Entwicklung und Anwendung von modernen Informationssystemen gilt.

The ISO/IEC 14776-346:2024 standard specifically addresses the need for a comprehensive model and command set extensions that facilitate the operation of zoned block devices. Its scope is critical in defining the standard command set for Zoned Block Commands, particularly within the framework of existing standards such as SPC-6 and SBC-5. One of the significant strengths of this standard is its ability to enhance the functionality and interoperability of SCSI zoned block devices. By providing detailed guidelines, it ensures that manufacturers and developers can implement consistent and efficient communication protocols between devices. This is especially relevant in environments where data storage efficiency and high performance are essential. Additionally, the relevance of ISO/IEC 14776-346:2024 cannot be overstated, as it addresses the evolving needs of the information technology landscape, particularly concerning data management and storage solutions. The standard's guidance on zoned block commands facilitates improved performance metrics and resource optimization, which are critical for contemporary data-intensive applications. Moreover, its alignment with other SCSI standards solidifies its position as a fundamental resource for developers working with zoned block devices, thus fostering a more unified approach to SCSI implementations. Overall, the ISO/IEC 14776-346:2024 standard represents a vital advancement in standardizing zoned block command protocols, ensuring that it meets current technological demands while laying the groundwork for future developments in the sector.

La norme ISO/IEC 14776-346:2024, intitulée "Technologie de l'information - Interface de petit système informatique (SCSI) - Partie 346 : Commandes de blocs zonés - 2 (ZBC-2)", joue un rôle crucial dans l'évolution des dispositifs de stockage à blocs zonés. Son champ d'application est bien défini, car ce document explicite le modèle et l'ensemble des extensions de commandes nécessaires pour faciliter l'exploitation des dispositifs à blocs zonés. L'un des points forts de cette norme réside dans sa capacité à harmoniser l'interface SCSI avec les nouveaux types de dispositifs de stockage, permettant ainsi une meilleure gestion des données et une amélioration de la performance. Les clauses de la norme, lorsqu'elles sont mises en œuvre en conjonction avec les clauses pertinentes des normes SPC-6 et SBC-5, établissent un ensemble de commandes standard pour les dispositifs à blocs zonés, garantissant ainsi une compatibilité et une interopérabilité accrues au sein de l'écosystème informatique. La norme ISO/IEC 14776-346:2024 est particulièrement pertinente à une époque où les exigences en matière de stockage continuent de croître. En favorisant l'adoption de commandes de blocs zonés, cette norme permet d'optimiser l'utilisation de l'espace de stockage et d'améliorer la gestion des données, ce qui est essentiel pour les entreprises et les développeurs de systèmes de stockage modernes. En résumé, cette norme constitue un cadre indispensable pour les professionnels de la technologie de l'information, en leur fournissant les outils nécessaires pour un déploiement efficace et standardisé des dispositifs à blocs zonés.

ISO/IEC 14776-346:2024 표준은 정보 기술 분야에서 소형 컴퓨터 시스템 인터페이스(SCSI)의 중요한 부분을 다루고 있습니다. 특히, 본 문서는 Zoned Block Commands - 2 (ZBC-2)에 대한 모델과 커맨드 세트 확장을 명확히 정의하고 있어, zoned 블록 장치의 운영을 용이하게 만드는 데 기여합니다. 이 표준의 강점 중 하나는 SPC-6 및 SBC-5의 적용 가능한 조항들과 함께 구현될 때, zoned 블록 장치에 대한 표준 커맨드 세트를 구체적으로 규명한다는 점입니다. 이는 다양한 SCSI 장치가 효율적으로 운영될 수 있도록 하여, 데이터 저장 및 전송의 일관성을 보장합니다. ISO/IEC 14776-346:2024의 범위는 넓으며, 특히 클라우드 컴퓨팅 및 대용량 데이터 환경에서의 필요성이 더욱 커지고 있습니다. 이 표준에 따라 zoned 블록 장치는 데이터의 효율적인 관리 및 처리 방식을 제공하며, 이는 현대 정보 기술의 발전에 필수적인 요소로 작용합니다. 따라서, ISO/IEC 14776-346:2024 표준은 현실적인 시스템 환경에서 그 유용성과 중요성이 더욱 부각되고 있으며, SCSI 장치의 최적화를 통해 정보 기술의 미래에도 중요한 영향을 미칠 것이라고 평가됩니다.