Distributed time services
Synchronizing clocks across a network or group of networks
helps programs that use time stamps function accurately. Examples
include database, configuration management, and
transaction-processing programs. Without this synchronization,
database files may be simultaneously (and incorrectly)
accessed by multiple machines, or updates to system files may be pushed
to remote machines at incorrect times.
Use the Time Synchronization Protocol (TSP) or the
Network Time Protocol (NTP), both members of the TCP/IP
protocol suite, to synchronize clocks on your network.
Both TSP and NTP are fully supported.
Each has its own advantages,
which are fully detailed in
The primary differences between NTP and TSP
NTP synchronizes clocks to Coordinated
Universal Time (UTC), the international time standard.
TSP synchronizes clocks to
a master time server you designate, which may or may not be
synchronized to an external standard.
A set of NTP servers, located on and accessible via the
Internet, provide NTP services to machines with
Internet access. TSP servers and clients must be configured
on the local network.
It is possible to
use NTP without Internet access
but with diminished accuracy. It is also possible to
configure a TSP server that is itself an NTP client.
TSP consists of a single server (that you define) servicing
a group of clients.
If the server goes down, an election algorithm determines a new server,
which then takes over responsibility for time synchronization. With
NTP, a hierarchy of servers, some on the local network, some
on the Internet, handle time synchronization. This redundancy of servers
allows one or more to go down without jeopardizing time synchronization on
the local network.
TSP is fairly straightforward to configure and administer,
while NTP offers more functional robustness and has a
more complex underlying file structure.
Distributed user management
Configuring remote printing
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003