I have a simple Time Machine Server configuration with 1 destination. Users are defined in Open Directory (but the machines that will be backing up to TMS do not login via Open Directory).
Updated info: Each user has their own machine and are administrators on their own machine. They will log into the Time Machine Server using their own Open Directory username and password. Encryption of TM backups will not be used.
Given this configuration, are backups secured per user when using Time Machine Server on OS X Server (Mountain Lion)?