

Anything USB connected more likely to be flaky, but a good enterprise disk shelf and a HBA card would be rock solid (just noisy…)
Unfortunately my solution when I did a big data migration was to buy more (cheap) storage lol. Ultimately it was a cost vs. time/stress tradeoff.
Agree with others, Vaultwarden is probably your best bet. I’ve found the default app to be a little flaky, but ended up using Keyguard, which I’ve found really good.
I used to use Keypass+Syncthing, but found sync conflicts too often (due to Syncthing support for Android), hence the switch.