System Redundancy Overview System Redundancy
Polycom, Inc. 519
Once a failover to a redundant server occurs, the redundant server manages
all system operations until another failover occurs or if administrator switches
back to the original primary server via the Switch Server Roles function in the
RealPresence Resource Manager system user interface.
Redundant Configuration System Administration
The system database is replicated between the two servers so most of their
configuration information is shared. In order for the system database to be
synchronized accurately, basic network settings for the two servers must
match.
The following settings must match between the two servers and be configured
before setting up redundancy.
This includes:
• Basic network settings such as IP, default gateway, and DNS settings
• Time and external NTP server settings
Licensing
Licensing and upgrading a redundant system is slightly more complex. The
primary and redundant server require different licenses.
Data Loss
Under some circumstances, data loss cannot be avoided. If one server has been
down for quite some time, its data may be out of date. If the system fails over
while out of sync, database data may be lost.
Considerations for Redundancy
Consider the following:
1 During first-time set up for each server, use the same NTP server for both
servers. You cannot modify the NTP server settings after setting up
redundancy.
Notes
• The RealPresence Resource Manager system does not automatically switch
to the primary server when the primary server becomes available. An
administrator may Switch Server Roles if needed.
Warning
Be sure to perform all network configuration for the RealPresence Resource
Manager system via the management interface.
