Building on the success of TrueNAS 25.04 “Fangtooth”, we’re proud to release TrueNAS 25.10 “Goldeye” to deliver a powerful and user-friendly experience, cutting-edge features for enhanced performance, and simplified operations.

As always, we’d like to thank the thousands of members of the TrueNAS community for their assistance in testing the early releases, and providing valuable feedback and bug reports for our Engineering teams to address. Read on to find out more about what TrueNAS 25.10 can do for you and your organization.

NVMe over Fabric (NVMe-oF) Goes Beyond Traditional Block Storage

TrueNAS 25.10 breaks free from the limitations of traditional storage protocols with NVMe over Fabric (NVMe-oF) support. NVMe-oF enables direct, high-speed access to data stored on remote arrays, effectively letting you treat storage on your TrueNAS 25.10 system as if it was a locally attached NVMe device. By removing the protocol overhead inherent in older block protocols like iSCSI and Fibre Channel, you can unlock unprecedented levels of I/O performance and significantly reduce latency.

When feeding demanding, compute-intensive workloads such as AI training and inference, NVMe-oF provides a significant advantage over other protocols, allowing GPUs and other accelerators to ingest information at speeds that keep pace with their processing capabilities. This dramatically reduces data transfer bottlenecks, leading to faster model training, more efficient data analysis, and quicker inference. Beyond AI/ML, NVMe-oF also significantly benefits high-performance transactional databases, virtualization and virtual desktop infrastructure (VDI), and other applications where every millisecond of latency reduction translates to improved user experience and operational efficiency.

TrueNAS 25.10 offers two available NVMe-oF deployment options. For broad compatibility and ease of implementation, NVMe/TCP leverages standard Ethernet networks, making it accessible for many organizations without requiring specialized hardware. This option provides a significant performance boost over traditional block protocols while utilizing existing network infrastructure.

For applications demanding the absolute highest levels of performance and the lowest possible latency, TrueNAS Enterprise 25.10 offers NVMe/RDMA (Remote Direct Memory Access) as the preferred choice. RDMA bypasses the CPU for data transfers, enabling direct memory-to-memory communication between the server and storage array, which results in extreme performance and microsecond-level latency for the most critical and performance-sensitive workloads. Real-world testing with a TrueNAS system delivered over 75 GB/s of read bandwidth from a single appliance.

Predictable Performance with OpenZFS 2.3.4 Improvements

TrueNAS 25.10 integrates the latest fixes available in the OpenZFS filesystem, with a suite of substantial enhancements crucial for optimizing data management and system performance. These improvements address various aspects from storage allocation and data integrity to memory management and system monitoring. Technical users are welcome to read some of the additional details in the earlier 25.10-RC1 blog or the TrueNAS 25.10 Release Notes.

A key area of refinement lies in ZFS storage pool allocation. The updated algorithms now facilitate more efficient and quicker data placement on individual disks within the storage pools. This not only accelerates overall write operations, but helps improve performance consistency especially under heavier workloads. By optimizing how the storage pool allocator distributes writes, TrueNAS 25.10 users will experience more consistent performance and reduced latency, which is vital for applications requiring high I/O throughput.

Space Efficiency and Reporting Improvements

Existing TrueNAS users are already enjoying the benefits of our adaptive, transparent data reduction methods through compression and OpenZFS block cloning. TrueNAS 25.10 extends both the reach and reporting capabilities of data reduction. Enhancements to the block cloning algorithm ensure that this highly efficient data reduction method is used in more file and block copy scenarios, while the updated Adaptive Replacement Cache (ARC) summary now shows the effective uncompressed size of data resident in cache, better representing the true size of your active data set and the advantage of TrueNAS space efficiency features.

Increased Enterprise Capabilities

TrueNAS 25.10 adds support for new hardware functionality, ready for integration into the latest TrueNAS Enterprise appliances.

Both all-flash and HDD based systems will see increases in the total raw capacity supported, with our high-performance F-series able to support 20PB of NVMe flash, and the TrueNAS M-series extending to 40PB of deep archive capabilities.

Big systems require big bandwidth, and TrueNAS 25.10 introduces support for the “Terabit Ethernet” family of adapters, with 400Gbps Ethernet interfaces ensuring that your data gets where it needs to go in a hurry, regardless of the protocol being used.

If you’re a current Enterprise customer, or would like more information about using the latest appliances and features that TrueNAS has to offer, reach out to our sales team to find out how to get your hands on the latest and greatest TrueNAS appliances.

Enhanced System Management and Integration

A major cornerstone of system integration introduced in TrueNAS 25.10 is the new Versioned TrueNAS API, a powerful interface built upon JSON-RPC 2.0 over WebSocket. This new API offers significant speed improvements over the old REST-based interface, leading to more responsive interactions with the TrueNAS system both from the built-in WebUI and from third-party integrations.

The versioned nature of the API also represents our commitment to predictable compatibility with third-party vendors and community integration efforts. By targeting a specific API version, software integrations can be assured of reliable functionality even after future TrueNAS upgrades, simplifying long-term management and software development lifecycles. Several plugins are already under development to leverage the new API, including plugins for Kubernetes, VMware vSphere, and Proxmox VE.

Our API is openly and fully documented at api.truenas.com, ready to help you integrate and leverage the power of TrueNAS in your own organization. If you’re a software developer interested in creating integrations between your product and TrueNAS, please reach out to us, and let’s build something amazing together.

TrueNAS Update Advisor and Profiles make it Simple to Stay Current

The new TrueNAS 25.10 update process overhauls the System Update page to introduce Update Profiles, making system updates simpler, more transparent, and user-centric.

Users can now choose from distinct update profiles to align with their operational needs and risk tolerance:

• Early Adopter: For users who want advanced pre-release access to the latest features and improvements.
• General: Recommended for most users, this profile focuses on stability and includes well-tested updates.
• Mission Critical: For Enterprise users, this profile enables 24×7 operation for TrueNAS appliances leveraging high availability.
• Developer: Geared towards developers and power users, this profile offers the most cutting-edge updates, often including experimental features, and is ideal for testing and development environments.

By selecting a profile, users ensure they receive update notifications that are directly relevant to their chosen pace and preferences, eliminating unnecessary alerts and providing a more focused experience. The new System Update page also includes a summary of key changes from the Release Notes, as well as a link to the full technical documentation available on docs.truenas.com for each release.

Web UI Improvements: Intuitive Design for Enhanced Usability

Functionality is fantastic, but the most powerful storage solution needs to be the easiest as well. We’ve tweaked and tuned multiple workflows in TrueNAS 25.10, with some of the improvements including:

• Improved iSCSI Wizard: The iSCSI configuration wizard has been refined to be more intuitive and user-friendly, simplifying the process of setting up and managing iSCSI targets and initiators.
• Enhanced Apps YAML Editor: For advanced TrueNAS Apps users who leverage YAML for custom configurations, the integrated YAML editor now offers improved functionality, potentially including syntax highlighting, validation, and a more streamlined editing experience.
• Responsive Statistics: System statistics and monitoring dashboards are now more responsive, providing real-time data and a smoother viewing experience, allowing administrators to quickly grasp the health and performance of their TrueNAS system.
• New Users Page: Easy checkbox configuration and integration with the predefined TrueNAS Administrative Roles let you quickly and easily set up new users.

Ready for TrueNAS Connect

If you haven’t heard of our new web-based control panel TrueNAS Connect, TrueNAS 25.10 enables this centralized system monitoring and management platform, making it easier to stay in control with predictable workflows and greater visibility across your storage platforms.

A simple, secure way to manage your TrueNAS system, TrueNAS Connect enhances – rather than replaces – the familiar TrueNAS interface with a real-time health monitoring, customizable alert delivery, inventory management, and more. Users just getting starting with their first TrueNAS installation can even experience the guided, web-driven installation from TrueNAS Connect, eliminating the need for a traditional console-based setup.

The pre-release version of TrueNAS Connect is free for our TrueNAS Community users to test-drive until December 1, 2025, with a staged rollout targeting TrueNAS Enterprise users by March 2026. New or existing TrueNAS 25.10 users can get started today at connect.truenas.com by signing in with their Google or GitHub OAuth credentials.

Streamlined Virtualization Experience

For several years, TrueNAS has provided a lightweight virtualization environment to allow customers to run compute workloads directly adjacent to their reliable storage. With TrueNAS 25.10, we’re introducing new Enterprise-ready virtualization capabilities, in a technology we’re calling the “Data Hypervisor.”

We’ve separated out the Enterprise-ready “Virtualization” interface from the experimental “Containers” panel, ensuring a more organized experience that doesn’t conflate the features of the two distinct methods of virtualization workloads on TrueNAS. Machines in the “Virtualization” interface run on the Kernel-based Virtual Machine (KVM) hypervisor, the same engine that powers virtualization at hyperscalers worldwide. TrueNAS 25.10 extends this previous VM functionality by enabling VMs on TrueNAS high-availability appliances, minimizing downtime for enterprise applications and services. These capabilities are specifically designed to leverage the high-performance and reliable storage provided by TrueNAS Enterprise appliances, offering a comprehensive solution for data-oriented workloads and customized appliance needs.

In addition to these capabilities, a crucial addition for flexibility and data mobility is the Virtualization Disk Import and Export feature, which enables the seamless migration and management of VM disk images within TrueNAS. It supports a wide range of popular formats, including VMDK (VMware), VDI (VirtualBox), and QCOW2 (QEMU Copy On Write). This broad compatibility ensures that users can easily integrate existing virtual machine environments into their TrueNAS infrastructure, and import pre-defined virtual appliances supplied by a number of third-party vendors.

TrueNAS 25.10 is Ready for Action

Whether you’re looking to upgrade from an earlier release or jump into TrueNAS for the very first time, there’s much more to learn about and love in TrueNAS 25.10. Check out our earlier blogs on TrueNAS 25.10-RC1 and TrueNAS 25.10-BETA to read more details on some of the Goldeye highlights and hardware support.

Ready to experience TrueNAS? You can download TrueNAS Community Edition to try it out, or if your business is ready to join the more than 60% of the Fortune 500 already using TrueNAS, reach out to our sales team and find out how the unified storage of TrueNAS can help you and your business take control of your storage.

Own Your Data – Get Started Today

Glossary

NVMe over Fabric (NVMe-oF)

A high-speed storage networking technology that lets hosts access remote NVMe storage as if it were local. In TrueNAS 25.10, it unlocks very low latency and high IOPS for AI/ML, databases, HPC, and other demanding workloads.

Remote Direct Memory Access (RDMA)

A means to allow a remote system to access the memory of a local machine to bypass several intermediary layers of CPU in the networking stack, significantly reducing latency and increasing peak throughput.

OpenZFS 2.3.4 Enhancements

Filesystem updates in TrueNAS 25.10 that improve pool allocation for faster, more consistent writes, broaden block cloning for better space efficiency, and enhance ARC reporting to reflect effective uncompressed cache size.

Versioned API

A faster JSON-RPC 2.0 over WebSocket API introduced in TrueNAS 25.10 with versioning for stable, predictable integrations across upgrades. Docs at https://api.truenas.com/.

TrueNAS Connect

A new centralized, web-based control plane enabled by TrueNAS 25.10 for real-time health monitoring, alerts, inventory, and guided web-driven installation. Access at https://connect.truenas.com/.

On June 1st, 2025, an update to the TrueNAS Apps Catalog will enable per-App IP addressing. This update will also break the ability to automatically migrate Apps from Cobia (23.10) and Dragonfish (24.04) to Electric Eel (24.10.2.2).

TrueNAS Apps in Dragonfish and earlier run on Kubernetes, while Electric Eel Apps run on Docker. The TrueNAS Engineering team developed the automated migration to ensure that upgrades would be simplified and straightforward, which our community embraced by making Electric Eel the fastest-adopted version of TrueNAS ever. With months of refinement and hundreds of fixes behind it, Electric Eel delivers reliable storage and applications and is recommended for even the most mission-critical workloads.

TrueNAS SCALE systems running Cobia (23.10) or earlier should upgrade to Dragonfish (24.04.2.5) and then subsequently to Electric Eel (24.10.2.2) afterwards.

TrueNAS systems with Apps should be upgraded immediately to 24.10.2.2, before June 1st! For users who are not yet running 24.10, the Apps auto-migration will make the process simple to move from Kubernetes to Docker, and users already on 24.10 can simply upgrade to the latest release from within the web UI or by downloading the standalone upgrade bundle from the TrueNAS Community Edition website under the Legacy Version column.

After June 1st, Cobia and Dragonfish users with Kubernetes Apps will need to manually back up and restore their application data and configuration to a new Electric Eel installation. The manual update process is more complex and should be avoided.

Upgrade NOW!

Most TrueNAS systems are already running Electric Eel (24.10) or Fangtooth (25.04) and are already prepared to leverage the new IP addressing capabilities in the June 1st Apps update. Users running NAS-only systems and those running TrueNAS 13.x will not be impacted by this change, but the small percentage of TrueNAS Cobia and Dragonfish systems with Apps – about 5% of TrueNAS systems – will encounter errors attempting to update Apps after this update.

If your system is still running TrueNAS Dragonfish, Cobia, or even earlier – the time to upgrade to Electric Eel is now. There’s no need to upgrade to Fangtooth (25.04) immediately – but upgrading to the newer TrueNAS releases ensures that you receive the latest stability, security, and functionality enhancements.

The TrueNAS team is pleased to announce the release of TrueNAS 24.10.2.2, a minor maintenance release for the TrueNAS “Electric Eel” branch. This maintenance release is designed to enable TrueNAS community users who wish to remain on TrueNAS 24.10 to leverage the upcoming changes to the App Catalog, and benefit from host IP port binding for more flexibility in their App deployments.

Ease of Migration was Key

When we initially delivered TrueNAS 24.10, our user base was overwhelmingly happy with the shift to the new Docker-powered Apps engine, embracing Electric Eel with the fastest uptake in TrueNAS history, eclipsing both TrueNAS 13.0 and 24.04 before it and rocketing to a six-digit deployment count in less than three months after launch.

Part of the ease of adoption of TrueNAS 24.10 was the automatic migration of the Kubernetes and Helm Chart powered applications of the past to the new Docker engine, allowing users to move even complex App configurations with often no manual intervention required. Now, we’re preparing to add even more flexibility to the Apps – and we’re hoping to make it just as seamless again.

Individual Application IP Addressing and Custom Networking

As part of the redesign in the new TrueNAS 25.04 “Fangtooth” update , the TrueNAS engineering team prepared the framework inside Docker and our web UI to enable individual Apps to be assigned their own IP addresses. This would allow customers with specific desires for isolation, traffic balancing, or other advanced networking needs to run their compute workloads as close to their high-performance storage as possible. Making these changes would necessitate some changes to the base framework of the TrueNAS and Docker App engines, and it would mean having to update the individual Apps as well – which would have made them incompatible with the existing TrueNAS 24.10 release.

While we’re excited about the enhanced performance of the unified code base in the newest TrueNAS 25.04 release – and so are the nearly 50,000 users already embracing it – we know that our community appreciates choices, control, and updating at their own pace. That’s why the engineering team made the decision to backport the work done for TrueNAS 25.04 into 24.10.2.2, letting users who leverage the virtualization layers in TrueNAS remain on their version of choice and still benefit from these changes to the Apps ecosystem.

On June 1st, 2025, we’ll be publishing an update to the TrueNAS Apps Catalog that will enable per-App IP addressing on a broad scale. Users on TrueNAS 24.10.2.2 or 25.04 will simply receive a prompt to update their Apps using the usual one-button refresh, and will then have the option to make any advanced networking changes desired. Users on an earlier version of 24.10 will receive an error message – and at this point, should update to 24.10.2.2 — or 25.04 — in order to resolve these and continue forward.

App Migration Deadline is June 1st

For those users still on TrueNAS 24.04 or earlier that have yet to migrate off of the previous Kubernetes powered Apps, please note that the June 1st Apps Catalog update also marks the closing of the automatic Kubernetes to Docker migration period. Upgrades from 24.04 to a newer version of TrueNAS at this time will not be able to migrate their existing Apps automatically, and will require manual reinstallation. After June 1st, users with data in Kubernetes Apps will be encouraged to manually back up and restore their application data and configuration to a new 24.10 based installation, or to move directly to 25.04.

The Choice is Yours To Make

Whether you’re choosing the latest release of TrueNAS or the previous one, both deliver the same rock-solid OpenZFS file system, with the strongest possible data integrity guarantees, the flexibility of RAIDZ expansion, and improved performance resulting from years of development. We’re looking forward to continuing to deliver new features and growing the TrueNAS Community in the future, so don’t hesitate to share your feedback with our team.

You can download the latest TrueNAS 24.10.2.2 update from within the TrueNAS web UI, or directly from our website at https://www.truenas.com/ . For more information on when you should update based on your use case, check out the Software Status page with links to important release and upgrade notes.

As of April 15, 2025, we were thrilled to announce the official release of TrueNAS 25.04 “Fangtooth”, and with it, a new era begins for the open storage community.

With this launch, we’ve made a small but important change:
TrueNAS SCALE is now officially known as TrueNAS Community Edition.

Why It Matters

This name change is relatively minor in the grand scheme of things, but also a major symbolic milestone that represents how far we’ve come and where we’re going next.

Over the past several years, we’ve maintained two open source branches:

• TrueNAS CORE, based on FreeBSD
• TrueNAS SCALE, built on Linux 

CORE was the original, but as SCALE began to surpass CORE in capability, performance, and quality, there was no reason to continue to maintain two software that served essentially the same purposes and user needs. Maintaining them in parallel also meant dividing our engineering resources and slowing the overall progress of the software. It also required duplicate documentation and support, forums discussions, and often confused new and existing users with questions like:

“What’s the difference between CORE and SCALE?”
“Which one is free?”
“Which version powers Enterprise?”
“Which one should I choose for my use case?”

With CORE being transitioned to its maintenance phase, and the maturation of SCALE, the 25.04 release presented an opportunity to also eliminate the confusion and redundancy by unifying, clarifying, and simplifying. One software. One name. No guesswork.

TrueNAS Community Edition (CE) represents the culmination of a long process of effort consolidation that will only benefit users going forward as we continue to evolve TrueNAS together.

But What Else Has Changed?

Nothing. Just the name. TrueNAS Community Edition is now the singular, free, open source storage platform for non-enterprise users. The unification of CORE and SCALE is complete. The ambiguity is eliminated. And, the TrueNAS Community now has one clear version to rally behind: a version named after them.

For those who have been paying close attention, we’d already been referring to it as “Community Edition” for over 6 months – the 25.04 release just makes it official. And, if you haven’t checked it out yet, the 25.04 release delivers more than ever .

What About TrueNAS Enterprise?

TrueNAS Enterprise continues to be our supported, licensed solution for critical data environments. It’s built on the same codebase as Community Edition, with additional feature enhancements (High Availability, Security, Performance, Enterprise integrations) and full enterprise level support services necessary for production deployments. It is typically provided as turnkey appliances that simplify deployment and are engineered specifically for TrueNAS performance and ongoing support.

Already Using SCALE or CORE?

Good news: You’re already on the path. Fangtooth (25.04) is the first official release with the new Community Edition naming. If you were using SCALE, you’re essentially already using it. If you’re still on CORE, you’ll find a clear evolutionary path forward, and release notes are available to help guide your transition, especially with VM migrations.

One Name. One Path. One Community.

This new name isn’t just easier to say, it’s easier to understand:

• TrueNAS Community Edition = Open source, free, community-supported
• TrueNAS Enterprise = Licensed, supported, and built for production 

Whether you call it TrueNAS Community Edition or TrueNAS CE, it’s clearer, cleaner, and a whole lot easier to explain to the world.

“TrueNAS Community Edition isn’t a reduction, it’s an evolution. Everything users valued in CORE or SCALE is here, and we’re bringing forward even more functionality, security, and innovation in each release cycle.”

— Kris Moore, SVP of Engineering

Join the Movement

The future of open storage is already here. It’s unified. It’s powerful. It’s TrueNAS Community Edition-built for the TrueNAS Community, by the TrueNAS Community, and supported through the TrueNAS Community. And, it grows stronger with every new user and software release.

A resounding “thank you” and “congratulations” to our global community of contributors, testers, users, and champions for making TrueNAS 25.04 a reality. This new name is meant to honor you all, and we can’t wait to see what we build together next.

Ready to jump in? Download TrueNAS Community Edition today!