NBN ISO/IEC 24775-5:2021

The Filesystems part of the Storage Management Technical Specification defines management profiles for
Autonomous (top level) profiles for programs and devices whose central function is providing support and
access to file data. In addition, it provides documentation of component profiles that deal with filesystems
and management interface functions that may be used by other autonomous profiles not included in this
part of the specification.
There is an informative annex that describes how storage is mapped from block storage to file shares
exported by the filesystem and the mechanisms involved in that establishing those mappings. This annex
is recommended for getting an overview of how the filesystem models work.
This version of the Filesystems part of the Storage Management Technical Specification includes two
autonomous profiles:
• The NAS Head Profile
This profile defines the model and functions of a NAS device that exports file shares to remote users and gets
its storage from a SAN (array devices attached to the NAS Head device).
• The Self-Contained NAS Profile
This profile defines the model and functions of a NAS device that exports file shares to remote users, but gets
its storage from disk drives that are internal to the NAS device (instead of externally attached arrays).
In addition to these autonomous profiles, this part of the specification defines a number of component
profiles, which are used by the autonomous NAS profiles and might also be used by other autonomous
profiles that feature filesystem elements and services. The component profiles defined in this version of
the specification include:
• The File Export (component) Profile
This component profile defines the elements used to model the exporting of filesystems or directories for any
autonomous profile that exports file data to remote systems.
• The File Export Manipulation (component) Profile
This component profile defines the elements used to model the services for creating, modifying and deleting
the file shares (the representation of exported filesystems or directories) for any autonomous profile that
provides manipulation of exported filesystems or directories.
• The File Storage (component) Profile
This component profile defines the elements used to model the storage of filesystems on logical disks. This
profile does not have services for maintaining the mapping of filesystems to logical disks. These services are
addressed in the Filesystem Manipulation Profile.
• The Filesystem (component) Profile
This component profile defines the elements used to model filesystems and its related elements, such as
logical files, directories and information on how the filesystem is addressed when mounted to a specific
system. The services for defining and maintaining the information in the Filesystem Profile are contained in the
Filesystem Manipulation Profile.
• The Filesystem Manipulation (component) Profile
This component profile defines the elements used to model the services for creating, modifying and deleting
filesystems and their related elements.
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INTERNATIONAL STANDARD ISO/ IEC 24775-5:2021(E)
© ISO/ IEC 2021 – All rights reserved

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• The Filesystem Quotas (component) Profile
This component profile defines the elements used to model the elements associated with creating, maintaining
and reporting on quotas on various filesystem elements.
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ISO/ IEC 24775-5:2021(E)
© ISO/ IEC 2021 – All rights reserved

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