NetWare Directory Services

5-6
Understanding Time Synchronization in NDS
Time Servers
Primary time servers “poll” other Primary or Reference time servers and
“vote” on a common network time. Primary time servers adjust their internal
clocks to synchronize with that common network time. Because all Primary
servers adjust their clocks, network time might drift slightly.
The following figure shows Primary time servers in various locations
providing time to their respective Secondary time servers. Secondary time
servers, in turn, provide time to their client workstations.
Figure 5-2 Primary Time Servers
You should place a Primary time server in each geographically distinct area
so that Secondary servers and client workstations can access them without
using WAN links.
Use Primary time servers on larger networks to increase Directory fault
tolerance by providing redundant paths for Secondary time servers.
London Tokyo
Detroit Los Angeles
New York
Secondary
servers
and clients
Primary
time server
and clients
Secondary
servers
and clients
Primary
time server
and clients
Secondary
servers
and clients
Primary
time server
and clients
Secondary
servers
and clients
Primary
time server
and clients
Secondary
servers
and clients
Primary
time server
and clients