TrueNAS 25.04 ‘Fangtooth’ debuts with Linux foundation and unified SCALE and CORE codebase

TrueNAS 25.04, codenamed “Fangtooth,” was just lately launched (obtain here), and with it comes a full embrace of Linux because the underlying base. Whereas earlier variations of TrueNAS had been confusingly cut up between CORE (constructed on FreeBSD) and SCALE (constructed on Linux), this launch lastly pushes the venture additional into its stunning Linux future.

This model builds on the inspiration laid by TrueNAS 24.10 “Electrical Eel.” That model introduced improved efficiency and Docker help, and Fangtooth expands on it with greater than 1,000 modifications, together with over 150 bug fixes. The replace is being provided as a launch model, however iXsystems continues to be recommending it for early adopters solely — not less than for now.

TrueNAS 25.04 runs on Linux Kernel 6.12, which brings broader {hardware} help and extra flexibility general. One main characteristic is Quick Deduplication, which is particularly useful for all-NVMe techniques just like the H30 and F100. It could assist cut back the storage footprint in sure workloads, notably in virtualized environments. RAID-Z enlargement can also be sooner now which might be useful for these managing rising swimming pools of knowledge.

There are updates to virtualization as properly. LXC and QEMU/KVM are actually dealt with by way of Incus, providing an alternative choice to jails and an improved VM system. Safe Boot can also be supported on this launch, which is helpful for working techniques that require TPM. The virtualization modifications are nonetheless marked experimental, however they present the place TrueNAS is headed.

App administration additionally improves with the power to assign IP addresses to new apps, and current apps will get this functionality by June 1. Customers nonetheless operating model 24.04 are inspired to replace quickly to reap the benefits of the brand new app migration system.

For enterprise customers, TrueNAS 25.04 brings various enhancements. Safety enhancements embrace help for GPOS STIG configurations, which can enchantment to organizations with stricter compliance wants. Efficiency additionally will get a lift with RDMA help for iSCSI and NFS, in addition to block-level cloning for VMware workloads.

Fibre Channel help is now included too, giving directors extra storage protocol choices on the identical {hardware}. There’s additionally sooner SMB file copy efficiency and simpler file restoration by way of snapshot listing entry over NFS.

Earlier than upgrading, TrueCommand customers ought to first transfer to model 3.1 to take care of compatibility with Fangtooth. As for which model to run, TrueNAS 24.10.2.1 continues to be the safer alternative for manufacturing environments proper now. Nevertheless, 25.04 is an choice for customers who need to check the brand new options or are deploying new techniques. For these coming from CORE 13.x, this model provides a direct path ahead, with acquainted NAS options like SMB, NFS, and iSCSI preserved whereas including entry to Docker and LXC.

As TrueNAS continues to evolve and enhance, the division between CORE and SCALE seems to be fading. With 25.04, Linux is now the inspiration, and the venture is clearly steering in that route going ahead.