Upgrading to TrueNAS Fangtooth (25.04) – What You Need to Know!
In this video, I walk through upgrading my home server to the latest TrueNAS Fangtooth (25.04) release. Fangtooth unifies CORE and SCALE into a single Community Edition and introduces major changes like the Incus hypervisor, LXC containers, and a new JSON-RPC API. I’ll show you how the upgrade went, what broke, what improved, and my early impressions after testing it out.
✅ Topics Covered:
🔹 Backup and prep steps before upgrading
🔹 How I performed the upgrade
🔹 What happened to my VMs and apps
🔹 Initial impressions of Incus and LXC
🔹 Key features and things to watch out for
*Release Notes:* https://www.truenas.com/docs/scale/25.04/gettingstarted/scalereleasenotes/
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📌 Timestamps:
0:00 Intro
0:20 Tour of my server before the upgrade
0:45 How to update
1:45 After the update - tour of the new(?) UI
3:05 Caveats about updating with VMs (see note at the bottom about this)
4:01 Configuring Instances
4:15 Creating a new Instance
4:50 How to revert back to 24.10
5:15 DO NOT upgrade your ZFS on pools yet
6:25 Dashboard upgrades
7:30 Release notes
8:17 Migrating old VM guide
8:45 When does my docker container get its own IP?
9:25 Dragonfish needs to update before *June 1st!!*
10:10 Core is EOL; next step is Fangtooth
10:31 Outro
**** Notes of VM upgrade: when I tried to follow the release notes to upgrade the VM on RC1 it did not work. However, I was able to follow it for the .0 release and got the proxmox backup server VM running. Despite the fact that it was running and I could get a shell through VNC I could not reach the WebUI for some unknown reason. More research on this is needed and I will release my results in a future video.
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