Please see attached. The network share is inaccessible, and I have zero clue what the problem is since it is otherwise accessible by all means from all servers. Why does SQL Server even need access to this share? I gave it permissions (NT SERVICE\MSSQL$CHISQLJAY1 - the account for my instance), but the failure is still evident.
Why do I even need this stupid backup directory? I don't want a backup. I don't need it. I just want to migrate my data to a new SQL Server instance. If the transfer fails, who cares?
I'm spending 99% of my time on a problem that has less than 1% relevance to what I want to do.