10.9 Server, you do not have the necessary read.write permissions for Time Machine Service
Setting up 10.9 Server's Time Machine service when I try to backup from a computer on my LAN I get "you do not have the necessary read,write and [sic] append privileges on the selected network backup disk."
I am logging in as the admin user for the OS X Server install.
Confused.
Mac mini (Late 2012), OS X Server