DMTF’s Redfish^®, Release 2025.4 is now available for public download. Designed to deliver simple and secure management for hybrid IT and the Software Defined Data Center (SDDC), the latest release of the Redfish standard includes 28 schema updates and new additions to the Message Registry.

Key highlights of the Redfish 2025.4 release are the additions of:

• NVMe Personality Support
• Port aggregation for network adapters
• Initial UALink additions
• NEW ProfileType support for interoperability profiles

These latest enhancements are driven by the growth of Redfish and interoperability feedback received from implementers. Some of the items in the Redfish 2025.4 update include:

• Redfish Specification v1.23.1
  • Added a term and reference for regular expressions based on ECMA-262
  • Clarified that POST (create) operations may include a NULL property value when defined in schema
• 2025.4 Redfish Schema Bundle – This .zip file contains the current versions of all Redfish schemas. This release bundle includes 28 schema updates along with developer resources.
  • NEW properties and actions added to Drive and Storage
    • ActivePersonalities property added to NVMe
    • SetPersonalityKey, FreezePersonality, GetPersonalityNonce, UnfreezePersonality, and RevertPersonalitiesToDefaults actions
  • NEW PortAggregation property in NetworkAdapter and IsAggregation and AssociatedPhysicalPorts properties added to Port
    • Added clarifications to Redundancy to differentiate the minimums needed for a group from the minimums needed for fault tolerance
  • NEW MinNumNeededForFaultTolerance and MinNeededForFaultTolerance properties added to specifically report fault tolerance limits
    • Added UALink support to Port, Processor, and Protocol

• Redfish Message Registry Bundle 2025.4 – The Message Registry Bundle (DSP8011) contains all released Redfish message registries.
  • NEW ManagerEvent adds messages to indicate conditions or configuration changes related to a manager
  • Environmental v1.4.0 adds messages for cooling unit redundancy events and fan warning events
  • Power v1.2.0 adds messages for power distribution redundancy events
• Redfish Interoperability Profiles Specification v1.9.0
  • Added ProfileType to provide new profile-based functionality to produce product specifications, test implementations for conformance, or validate a deployment configuration.
• Redfish Release 2025.4 Overview – This presentation provides detailed descriptions of each revision in Redfish 2025.4.
• Redfish Resource and Schema Guide – Updated for 2025.4 this human-readable guide to the Redfish Schema is designed to help educate users of Redfish. Application developers and DevOps personnel creating client-side software to communicate with a Redfish service, as well as other consumers of the standard, will benefit from the explanations in this resource.
• Redfish Conformance Testing Tools - Open source tools for service developers to validate their conformance with the Redfish protocol, data model, and profiles. Tools include the Redfish Protocol Validator, Redfish Service Validator, Redfish Interop Validator.
• Redfish Publications Repository - Public GitHub repository contains an official read-only copy of the Redfish schemas and standard message registries
  • Creates public, durable locations for referencing specific schema or registry items in issue reports, forum postings, or other online references
  • Allows developers to automatically synchronize with new Redfish releases using normal GitHub tools and processes
  • Repository will be updated as each Redfish release become public
• Redfish Data Model Specification – Includes normative statements (“LongDescription”) and informative description details from schema in a single document. Intended for both Redfish Service and client-side developers.
• Redfish Property Guide – Intended primarily for schema authors, this newly revised reference helps with locating existing property definitions within the Redfish schema.
• Redfish Release History – Updated with each new release, this presentation offers a comprehensive view of each revision to Redfish since 2016.

DMTF’s Redfish Forum would like to invite anyone interested in learning about the Redfish 2025.4 release to join a live webinar, hosted via Zoom, on Thursday, February 5, 2026, at 9:00 a.m. PT. The Forum chairs will present the contents of the release followed by a round table discussion. For questions regarding the webinar, email: webinars@dmtf.org. Don’t delay, be sure to register today!

To learn more about Redfish, click here. The Redfish Developer Hub is a one-stop, in-depth technical resource and provides all the files, tools, community support, tutorials and other advanced education you may need to help you use Redfish. Technical work on the Redfish standard takes place in DMTF’s Redfish Forum. To find out how you can join and contribute to this standard, click here. To submit input via the DMTF Technology Submission and Feedback Portal click here.