Is a R-Pi (probably a 5 with SSD) definitely not a good idea for HA?
I've been running HA as a VM in Unraid but due to the length of time and number of updates I am at a point I've got issues with legacy integration baggage and side loaded stuff that is now officially supported that I want to clear it out and start again.
I have had a couple of server hardware issues that meant it was out of action for a week which was a PITA as all my automation stopped, and on top of that, I have dedicated cores/memory for the VM which I could free up for Unraid which at times is max'd out.
I can see people mentioning compatibility issues so just wanted to check if it's a daft idea!
I've been running on a 4 with SSD for a few years now, and I'd say I'm probably a med-heavy user. As an intro into HA it'll do you well, and last for a while.
Some of my energy monitoring devices are very chatty and those write out a lot to the database. I've now decided to move over a VM running on Proxmox - a) for the performance uplift and b) for the ease of backing up. Rather than having to deploy a new VM and then restore from backup I can just restore the entire VM.