Shutdown not working + thread question

[Operations]

I use a donated filesync version, i really really love this program!

I have one question and one problem.

Question:
I use 6 threads on a 10 Gbit network with a Raid 6 array on both ends. This is working fine, but is there a best practice when it comes to how many threads you should use?

Problem:
After syncing the shutdown is not working. So i have to manually switch off the backup server. I am not seeing an error or something like that, the sync window closes and that is it. I use Server 2016.

Anybody got any idea how to fix this?

[Plerry]

Is the user under which user credentials the FFS task is run allowed to perform a shutdown action?

If shutting down via FFS does not work, you may try have FFS launch the command "shutdown /s", possibly with some suitable extra options (see here)

[xCSxXenon]

Threads in FFS aren't how many threads of your CPU it uses. It is just a number a parallel transfers. So if you can only transfer 5MB/s because the server limits it, it can open up 4 threads and do 20MB/s essentially.