TrueNAS 25.10 Arrives With Significant Performance Gains
TrueNAS, a popular operating system for home servers and NAS systems, just released its big 25.10 update. This version makes storage fast, simplifies management, and unifies storage in a way that's more user-friendly than ever before.
The biggest speed improvement is the new NVMe over Fabric (NVMe-oF) support, which totally breaks free from the limits of old protocols like iSCSI. What this basically means is that your TrueNAS 25.10 system can now treat its remote storage like a local, super-fast NVMe drive, which cuts down on protocol overhead and significantly reduces latency.
This is a massive advantage when you're feeding compute-intensive workloads like AI training, letting GPUs and other accelerators suck up information at speeds that match their processing capabilities. This is huge for anyone doing serious data analysis, VDI, or high-performance databases where every millisecond counts.
TrueNAS 25.10 has two ways to use this tech. If you want broad compatibility and don't want to mess with specialized hardware, NVMe/TCP is your go-to since it runs over standard Ethernet. However, for those of you who need the absolute lowest latency and highest performance, the Enterprise edition offers NVMe and Remote Direct Memory Access (RDMA).
RDMA is wild because it bypasses the CPU for data transfers, which means direct memory-to-memory communication that gets you microsecond-level latency. We're talking about real-world tests showing over 75 GB/s of read bandwidth from a single TrueNAS appliance, which is seriously impressive speed.
The performance gains don't stop there. The update also brings in fixes from OpenZFS 2.3.4, which is all about optimizing data management and system performance. A key area they focused on is how ZFS allocates storage. They've refined the algorithms, so data is placed on disks more efficiently and quickly. This means that when you're under heavy load, you'll see faster write operations and much more consistent performance.
TrueNAS has also gotten better at saving you space. The block cloning algorithm has been improved to be used in more block and file copy situations. Also, the Adaptive Replacement Cache (ARC) summary now shows the effective uncompressed size of data in the cache, which gives you a clearer picture of how much space those great TrueNAS efficiency features are actually saving you.
For those running massive Enterprise systems, TrueNAS 25.10 now supports even bigger capacities. It is up to 20PB of NVMe flash for the F-series and 40PB for the M-series' deep archive capabilities. The company has also rolled out support for "Terabit Ethernet" adapters, bringing 400Gbps interfaces to make sure your data flies, no matter the protocol.
While that's my favorite part, the TrueNAS 25.10 update isn't just a general speed boost. The team has introduced a Versioned TrueNAS API built on JSON-RPC 2.0 over WebSocket. This new API is way faster than the old REST-based one, giving you a more responsive feel in the WebUI and for any third-party integrations.
The System Update page has also been totally revamped with Update Profiles, making it super simple to stay current. You can pick from profiles like Early Adopter for the bleeding edge, General for stability, or Mission Critical for 24x7 operation. You can download the TrueNAS Community Edition from the website to try it out.
Source: TrueNAS
