Which are the problems you envision in having two instances?
Duplicated events if they are copies of each other… that is my initial thought.
Possible cross-talk or interference in controlling devices as well.
Here is are some old threads about it:
There used to be some documentation but I could not find it.
So far (1 hour) it works perfectly fine. None of the problems above.
One instance on a pi3: HASSIO with letsencrypt and duckdns
Second instance on a NUC: HASSIO only local
I don’t know how to do 2 letsencrypt/duckdns in same LAN
Other difference is Zwave which I have only in the pi3 because I have only one zwave stick, but on both I have lots of WiFI devices and zigbee (Hue and xiaomi)
An old post, but for me a new question
How do you connect to both Hassio’s; HASSIO_IP1:8123 and HASSIO_IP2:8123?
Seems to me that connecting using hassio.local:8123 will connect to only one…?