User guide

Primary and Secondary CMS Servers CentreVu CMS R3V8 High Availability User Guide
Primary versus Secondary CMS servers 2-1
Chapter 2: Primary and Secondary CMS Servers
Primary versus Secondary CMS servers 2
When the CMS High Availability offer is installed at your location, you
designate one CMS server to be the “Primary” and the other as the
“Secondary”. It is highly recommended that you perform
administration only on the Primary CMS Server, and administer
from the Secondary CMS server only when the Primary is down. In
order to avoid possible confusion, the two servers should be clearly
labeled to indicate which is the primary and secondary.
The Primary and Secondary servers are essentially identical, except for
the following differences.
Both CMS servers collect data from the DEFINITY®, but they operate
completely independently and are not even aware of each other. Both
CMS servers provide full CMS capabilities except for the differences
listed above. Should either server fail, lose connection to the
DEFINITY®, or need to be brought down for maintenance, the alternate
server can carry the entire CMS activity load.
It is strongly recommended that you always perform administration
functions on one CMS server (designated the “Primary” CMS server) and
use the “Secondary” CMS server as a backup. Performing administration
on both servers could lead to synchronization problems and loss of
historical and/or admin data.
Primary CMS Server Secondary CMS Server
May have Internet Call
Center loaded
Does not have Internet Call Center
loaded
May have External Call
History turned on
Does not have External Call History
turned on
Has timetables turned on Timetables turned off, except for
incremental and full backup
timetables and any others you want
to run on both CMS servers. (See
the “
Timetables – Running only on
the Primary server” section in this
guide for more details.)
Caution