TrueNAS 25.10 is now available as a stable release and includes changes designed for advanced professional and home environments. In this release, iXsystems enhances data access with NVMe over Fabrics, updates its API, and strengthens OpenZFS , focusing on performance, management, and scalability.
Beyond raw performance, the update aims to simplify daily operations. From upgrade profiles to web interface improvements , the platform seeks to reduce friction in deployments and maintenance—a crucial detail for teams in Spain and the rest of Europe managing critical storage.
NVMe over Fabrics: What changes in TrueNAS 25.10 data access
The major new feature is NVMe over Fabrics support. With this technology, a TrueNAS system can treat remote NVMe storage arrays as if they were local , reducing the overhead of traditional protocols and latency in demanding operations.
The Community edition enables NVMe/TCP, which operates over standard Ethernet, while the Enterprise edition adds NVMe with RDMA. Using RDMA bypasses the CPU for many data transfers , bringing latency to the microsecond scale and improving the efficiency of compute nodes.
According to the figures reported for this version, a single TrueNAS appliance can exceed 75 GB/s read speed in suitable scenarios, a point of interest for AI, VDI or high-performance databases where every ms counts.
OpenZFS 2.3.4: More speed and space efficiency in TrueNAS 25.10
TrueNAS 25.10 incorporates OpenZFS 2.3.4, with a set of optimizations that refine performance under load. Allocation algorithms have been fine-tuned to place data more efficiently and accelerate writes while maintaining a more consistent response.
It also improves space efficiency: block cloning is now applied in more copy operations , and the ARC summary shows the effective uncompressed size of the cached data, providing a clearer picture of the actual savings and system behavior.
In addition to these optimizations, progress is reported in scrubbing and error correction , a key aspect for large-scale deployments where integrity is paramount.
Virtualization, security, and GPUs
The VM subsystem receives a multi-pronged overhaul. Secure Boot arrives to reinforce reliable startup , and startup behaviors are adjusted to avoid conflicts between container and virtual machine interfaces.
In enterprise environments, high availability enables VM failover between nodes to minimize downtime for critical services. It also includes support for NVIDIA's open kernel modules, encompassing recent-generation GPUs such as Blackwell.
Additionally, VM disk import and export functions and specific fixes for NVMe-oF in these scenarios are added, reinforcing the robustness of the package.
Network and scalability: 400GbE and more capacity
In terms of connectivity, TrueNAS 25.10 expands support for very high-speed adapters. Drivers for 400GbE interfaces , geared towards networks with AI and analytics workloads, have been updated.
Network management has also been improved, smoothing transitions between DHCP and static IP addresses to reduce issues during configuration changes. This attention to detail makes it easier to work in data centers and small businesses with smaller teams.
In Enterprise hardware, the platform scales higher: up to 20 PB of NVMe flash in the F series and deep archive capabilities of up to 40 PB in the M series , along with very high bandwidth networking options to avoid creating bottlenecks.
API, interface, and faster updates
Interaction with the system gains speed with the new versioned API based on JSON-RPC 2.0 over WebSocket , which replaces the REST approach in intensive tasks and speeds up the WebUI and third-party integrations.
The system update page is refreshed with Update profiles to choose the desired balance: Early Adopter for testing earlier, General for stability, or Mission Critical when the priority is 24×7.
Web browser installation is another step toward simplifying deployments, and the documentation recommends using the interface updater and avoiding manual Docker installations that could interfere with the TrueNAS application ecosystem.
Editions, availability and context in Europe
The Community Edition can be downloaded from the official portal, while the NVMe/RDMA and VM HA features are geared towards the Enterprise edition . The release codename is Goldeye, and it follows a testing cycle that incorporated community feedback.
In the European market, the combination of NVMe-oF, 400GbE, and OpenZFS 2.3.4 is well-suited to generative AI projects, virtual desktops, and data lakes, common in sectors such as finance, healthcare, and manufacturing. For Spain, it could be particularly useful for storage array consolidation and accelerating ETL processes and analytics.
For those who opt for turnkey solutions, the Enterprise F-Series all-NVMe appliances announced by iXsystems complement the software, seeking a balance between density, performance and management.
As an operational guideline, it is advisable to validate compatibility of 100/200/400GbE NICs, plan migration paths to NVMe-oF , and review GPU requirements if accelerated workloads will be run within VMs or containers.
This whole package is not just about speed; it aims for more predictable, observable, and easier-to-maintain storage , with modern APIs, update profiles, and cache telemetry that is more useful for daily decisions.