ISO/IEC 24775-2:2014

Overview

ISO/IEC 24775-2:2014 - Information technology - Storage management - Part 2: Common architecture - is an IEC/ISO International Standard that defines the core architecture and protocols used by SMI-S (Storage Management Initiative Specification). It formalizes the transport stack, object-model conventions, health and fault management, naming and correlation rules, standard messages, service discovery, installation/upgrade guidance, and compliance requirements for storage management interfaces.

Key topics and technical requirements

• Transport and reference model: Defines the transport stack and communication roles for SMI-S interface constituents, including XML message syntax/semantics and communications requirements.
• Health and fault management: Specifies objectives and mechanisms for monitoring state, operational status, health state polling, standard errors/events, event correlation, fault containment and fault regions.
• Object model guidance: General information about the CIM-based object model (UML/CIM notation), modeling profiles, naming and CIM fundamentals used by storage management.
• Correlatable and durable names: Guidelines and standard formats for logical unit names, port names, fabric and storage system names (including SCSI, FC, iSCSI and operating-system device naming considerations).
• Standard messages: Requirements for standardized error, event and exception messages, and a message registry covering common, protocol, storage, fabric, host and media-library messages.
• Service discovery: Techniques and SLP-based service definitions, scopes, user/service/directory agent roles, configurations (multicast, DA), and WBEM/SLP integration for SMI-S service discovery.
• Roles and deployment: Definitions of client/server roles (IT-SM client, dedicated and general-purpose servers, directory server), provider subroles, lock management and combined-role deployment considerations.
• Installation, upgrade and compliance: Recommendations for non‑disruptive installs, plug-and-play behavior, update/uninstallation, maturity model stages (experimental → finalized), profiles and compliance requirements.

Applications and who uses it

ISO/IEC 24775-2 is used to achieve interoperable storage management across heterogeneous environments. Typical users include:

• Storage-system vendors implementing SMI-S-compliant management interfaces.
• Management software developers (WBEM/CIM providers, SAN/NAS management tools).
• System integrators and datacenter operators standardizing monitoring, fault handling and automation.
• Standards bodies and test labs validating compliance, message registries and profiles.

Practical benefits: improved interoperability, consistent fault reporting, durable naming for cross-vendor correlation, automated discovery of SMI-S services, and guidance for safe installation/upgrades.

Related standards

• Part of the ISO/IEC 24775 series (Parts 1 and 2–8); together these replace ISO/IEC 24775 (2nd ed., 2011).
• Closely aligned with SMI-S, CIM/WBEM and SLP technologies covered in the series.