Hello,
as Poechi said, I replaced one, repaired, completed repair then turn off again, replaced the second one, repair.
Everything works fine but I still got that message and I cant seem to fix the system partition. No relevant message in the logs, is there any other log I should check? like in telnet or something?
I might just redo the whole setup, just have to buy a 4TB drive to backup everything.
Paul