Is the Hba in a traditional server case with lots of airflow? My 9207-8i displayed a similar issue bc it didn’t have enough direct cooling (it’s not in a traditional server/case.) it would never show more than 2 drives at a time and they would often vanish. Once I mounted a fan to it, the Hba has been stable and showing every drive I attach
Depends on the machine… Debian, arch, and fedora