Akendi

The recipe listed above worked for me. Each step is straightforward. UnRaid developers made the whole thing simple once you know what to do.
 
Backup, simulated random file corruption, and then restore of the appdata and system directories may work as expected but I'm far too intimidated at the moment to try it out. Maybe allow the system to settle for a couple of weeks then see how things go. Would like to get to the point where a week old off-site backup can be used to recover from a failed nvme within, for example, four hours.