Olle

Just an perhaps unrelated followup, but this is the first Google-hit if you google "unraid sh high CPU". I did what @BRiT said and it look like sh were triggered by atd (scheduled job). It also had inotifywait (looks for updated files) in the same process tree. This lead me to the conclusion that the plugin "Dynamix Cache Dirs" may be involved somehow. I deactivated that plugin (since my problems with spinning up disks were solved) and the high CPU stopped. This was just a reminder for me to deactivate plugins I don't currently use.. This may help someone else coming to this seemingly dead thread. :)