I agree, that taken all projects running on a raspberry pi into account using an SSD is possibly not mainstream.
However, with running OH on a rasp I think it’s crucial to use an SSD because of issues with the sd-card I and others have.
Since I use the SSD for OH, I have never had issues (possibly) related to the SD-card and it runs perfectly stable.
Anyway, I am very thankful for openhabian - so don’t get me wrong.
I just wanted to do a pre-check of potential issues.
Looking to provide solutions to the mainstream (i.e. people who don’t own SSDs), this is why openHABian now has ZRAM.
And this is why I dislike people praising SSD as a solution here - it’s fine as a solution they do for themselves but it’s no suitable recommendation for the majority of people. These don’t want to spend the money and efforts of taking that route or simply are not capable of doing it (not all of them are IT affine).
I don’t understand that question.
It is as realistic on a Pi 4 as it is on any other Pi, the RAM size does not matter.
The openHABian ZRAM feature does not eliminate all writes but most as not all directories are moved to ZRAM. You CAN change it to run anything off / in ZRAM if you have enough RAM or your / is small enough to fit in, whichever way you want to put it.