Turn on the Time Machine service
Configure OS X Server to offer Time Machine services
A powerful feature of Time Machine is its ability to use network-based share points as a backup location. You can use OS X Server to provide a centralized destination for backups and to quickly monitor your users’ backups, including information about how large each backup is, the progress of a backup, and the last time a backup was successfully completed.
To use your server as a Time Machine backup destination, ...