TrueNAS SCALE vs CORE 2026: What Changed, and Whether It Is Time to Migrate

The truenas scale vs core 2026 question has a shorter answer than it did two years ago, because iXsystems has effectively answered it for you. TrueNAS CORE is no longer under active development: the official software status page ↗ lists 13.0-U6.8 and 13.3-U1.2 as legacy downloads, and every version still receiving attention is on the Linux side, which iXsystems now calls TrueNAS Community Edition rather than SCALE. The real 2026 question is not “which one is better” but “if I am still on CORE, when and how do I get off it.” This post covers the current state of both lines and the migration mechanics, since the decision for a brand-new build is no longer close.

Where each version stands in 2026

The software status page ↗ is the source of truth here, and it is worth reading directly because it changes as releases move through their lifecycle. As of mid-2026 it shows:

Version	Base OS	Status
CORE 13.0-U6.8 / 13.3-U1.2	FreeBSD	Legacy, no active development
24.10 “Electric Eel”	Debian Linux	Maintenance
25.04 “Fangtooth”	Debian Linux	Maintenance
25.10 “Goldeye”	Debian Linux	Recommended general release (25.10.4, June 3, 2026)

Note what is missing: an end-of-life date for CORE. iXsystems has not published one. The page recommends enterprise customers contact support to discuss migration, which tells you where this is heading without saying it outright. CORE boxes still boot, pools still scrub, shares still serve. But the last release already shipped, and “no active development” means the FreeBSD base, Samba, and everything else in the image is frozen where it stands.

What staying on CORE actually costs you

For a storage-only appliance on validated hardware, the honest answer is: not much, yet. OpenZFS does not forget how to checksum because the OS around it stopped getting releases. If your CORE box has been quietly replicating snapshots for five years, nothing breaks on January 1st.

The costs are all forward-looking. No new hardware enablement, so that NIC or HBA in your next rebuild may not have a driver. No new feature work on the SMB/NFS stack. And most importantly, a shrinking window of security response on an internet-adjacent appliance. NAS devices are a perennial ransomware target, and the steady drumbeat of storage-vendor CVEs in the general security news ↗ should inform how long you are comfortable running a NAS OS whose final build is already behind it. A NAS that never touches the internet buys you time; one exposed through a VPN or reverse proxy deserves an actively maintained OS.

What the SCALE side looks like now

The current release, TrueNAS 25.10 “Goldeye” ↗, shipped October 28, 2025 and shows where development effort is going. The headliners are OpenZFS 2.3.4 with improved pool allocation and expanded block cloning, NVMe over Fabrics (NVMe/TCP is in the free Community Edition; NVMe/RDMA and the 75 GB/s demo numbers are Enterprise hardware territory, and those figures are vendor-published), and a versioned JSON-RPC API replacing the old REST interface. Goldeye also expanded the KVM-based virtualization layer, including disk import from VMDK, VDI, and QCOW2, and added update profiles so you can pin a box to a conservative track instead of riding every release.

For a home deployment, the practical wins over CORE remain the boring ones: broader Linux driver support for consumer hardware, Docker-based apps instead of the dead-end plugin system, and GPU passthrough for media transcoding that mostly just works. If you are choosing between the two for a fresh install in 2026, that plus the table above is the whole argument.

The migration is one-way, so plan it like one

The official migration guide ↗ is blunt: “Migrating TrueNAS from CORE to SCALE is a one-way operation.” Attempting to roll back to a CORE boot environment afterward can break the system. Before you start:

• Update CORE first. The documented path requires the latest maintenance release of 13.0 (or 13.3 for community users) as the starting point.
• Do not jump straight to the newest release. The documented in-place path goes through an intermediate SCALE version (24.04) before upgrading onward; landing directly on a current release means a clean install plus config restore instead.
• Know what carries over. Accounts, networking, shares, storage configuration, and data protection tasks migrate with the config. Your pools come along untouched.
• Know what does not. FreeBSD jails have no Linux equivalent, so anything running in a jail gets rebuilt as an app or VM on the other side. Budget real time for this; it is usually the longest part of the job.
• Treat it as a maintenance event. iXsystems recommends an extended maintenance window and a post-migration review pass. Take a config backup and verify your replication target is current before touching anything.

If your CORE box is also your only copy of the data, fix that before migrating, not after. A one-way OS operation on a single-copy dataset is how people end up in recovery forums.

Bottom line

New build in 2026: install Community Edition (SCALE) and do not look back. Existing CORE box serving storage on a private network: you can keep riding it for now, but pick a migration window this year rather than waiting for a CVE to pick one for you. Existing CORE box running jails or anything internet-facing: move sooner, and rebuild the jail workloads as apps or VMs during the migration rather than trying to preserve them.

Sources

• TrueNAS Software Status ↗ — iXsystems’ official lifecycle page; the authoritative record of which versions are current, in maintenance, or legacy, including the CORE status and the 25.10.4 release date cited above.
• TrueNAS 25.10 “Goldeye” Officially Released ↗ — the vendor release announcement; source for the October 28, 2025 release date, OpenZFS 2.3.4, NVMe-oF details, and the API changes. Performance figures in it are vendor-published.
• Migrating TrueNAS CORE to SCALE ↗ — the official migration procedure; source for the one-way warning, version prerequisites, and what the config migration carries over.