I’m going to experiment with a USB thumb drive formatted at ExFat in the meantime.
But I’d really like to be able to backup my Roon database to my iMac directly. Thanks to you and Jim, I can see that’s the way to go. But I can’t get the SMB syntax still.
You obviously miss the share name (probably: old Roon) as well as username and password.
Note: A share name containing a space character may make things complicated as you may have to mask/encode it. I don’t know for sure, test it or simply remove the space to make life easier.
Why do you expect that to work?
According to your screenshots try: smb://192.168.0.170/old Roon or smb://192.168.0.170/old%20Roon as it seems you like to insist on using a share with a space
Look at your screenshot above or the example in the linked help article, there is a input field labeled accordingly for each in the “Add network share” dialog window in Roon.