Hi all,
Not sure if this is a valid concern for anyone anymore, but I have been struggling with using a mac at work with Unraid, and was a BI%^H to use, until I finally figured it out with Google's help. I am only minimally technically proficient, and most of this stuff is Greek to me, but I can put what I found here, in case anyone can gain any benefit from it.
Apparently the reason recent versions of OS X don't play well with Unraid is Apple's implementation of Samba / SMB. Something called Client Signing is defaulted to "on", and it seems like Finder times out while trying to sign in each time.
The easy temporary fix is to open up a Terminal window and type the following command:
printf "[default]\nsigning_required=no\n" | sudo tee /etc/nsmb.conf >/dev/null
The permanent solution that stays after a reboot is to put the following code into /etc/nsmb:
[default]
signing_required=no
I can confirm that I have been running without disconnections / slowdowns for a few weeks now.
Credit to the dpron at the below link for an excellent post that gives thorough technical details as well was how to reverse it should you need to.
https://dpron.com/os-x-10-11-5-slow-smb/
Best of luck to all... Hope it works. Just wanted to share since this issue was driving me insane.
Fauzi