
Once a single replica has been established, other Mac OS X Servers can be set up as replicas
of replicas. This increases the redundancy and potentially improves performance of the
entire Open Directory structure.
Because replication uses timestamps, it is best to use NTP to synchronize the
clocks on all Open Directory masters, replicas, and servers using existing masters. You
enable NTP services in Mac OS X Server in Server Admin. You configure a server to
use NTP services in the Date & Time pane of System Preferences.
Using Authentication Methods on Mac OS X Server
Open Directory offers a variety of options for authenticating users whose accounts ar ...