@maniac_on_moon sagte in Migrating rapsberry pi 3+ to rpi 4 simple way:
On the other hand, is there a clear technical requirement for a new installation?
What do you mean with this? Hardware requirements?
ioBroker generally runs everywhere where Nodejs runs. After that, the question is, what adapters you have and how many instances are running. On a smaller home, a Raspi 4 with 4GB RAM should suffice, if you have a lot of stuff going on, running it on a NAS or even a server running e.g. Proxmox is advisable. Using an SSD and not a SD card should be obvious.