I know upgrade is possible, but is it safe enough? I want to avoid any possible problems, because when I reinstall the ESXi server (and am planning to move to supported version of TrueNAS during the process) TrueNAS is running on, I don’t want to touch the thing for several more years :smiley: I am…

Running TrueNAS virtualised is possibly more dangerous than sidegrading from CORE to SCALE… (Not to mention trusting Broadcomm to keep ESXi available.) But if you’re using TrueNAS purely for storage, with apps and VMs directly under ESXi, you may as well fossilise on CORE for “several more years” a…

I don’t think so, I’ve been running it virtualized from day one of using it and never had any problems. I am on old ESXi version too. Plus I intend to reinstall the server with XCP-ng anyway. What else but storage would I use the thing for, out of curiosity?

All the rage about SCALE is about having a different system for vitualisation and containerised applications with each new release. In the fury, some have forgotten that a NAS is first about storage and then, possibly, very optionally, about running docker alongside.

AFAIK the in-place upgrade from 13.3 (CORE) to 24.x (SCALE) is a one-way upgrade, there is no way to fall back. I would not upgrade in place but save a copy of the existing boot device(s), provision new boot device(s) and do a fresh installation, then import your data zpools. This was if the instal…

I do this kind of thing routinely for my personal development. NOTE: If you have the VM on automatic startup, disable it or you will shoot yourself in the foot. There are only a few simple steps: Backup your CORE config files. In ESXi, clone your TrueNAS VM. If you can’t clone because you are u…

Should I upgrade from CORE to SCALE or do a clean install?

TrueNAS General

Sara June 3, 2025, 10:30am 2

https://forums.truenas.com/t/migration-path-from-core-to-scale/43831

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Should I upgrade from CORE to SCALE or do a clean install?

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