User guide

Frequently Asked Questions CentreVu CMS R3V8 High Availability User Guide
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Appendix F: Frequently Asked Questions
What is the purpose of the CMS High Availability offer? The purpose
of the CMS High Availability offer is to ensure data availability between
the DEFINITY ECS and the CMS system by connecting two CMS servers
at one site to one DEFINITY® system, thereby eliminating the traditional
single point of failure between the CMS and the DEFINITY system.
What platforms support the CMS High Availability offer? UE3000-
UE3500, UE3500-UE3500, UE3000-UE3000, and Ultra5-Ultra5.
Are the Primary and Secondary CMS servers aware of each other?
No. Both CMS servers collect data from the DEFINITY®, but they
operate completely independently and are not even aware of each other.
What is the purpose of the dual ACD link? The dual ACD link feature
addresses ACD link failures and builds on the increased ACD link
reliability provided by TCP/IP.
Does each CMS server collect the same data? Yes. Both CMS
servers collect identical real-time, historical, and call record data.
When I attempt to simultaneously view Real Time Reports on both
of the HA servers, why don’t the reports match precisely? There are
several reasons why this can occur. Real Time reports are pushed to the
client at specified intervals - the “refresh rate”. Most likely, you did not
start the reports at exactly the same time, so there is a slight lag in data
reporting associated with the staggered refresh rates between the two
servers. In addition, it is also possible that different refresh rates have
been set for the two servers.
How do I know when I should perform a server switch-over from the
Primary to the Secondary HA server? Server switch-overs are not
recommended for system outages of realtively brief duration. However, it
is the responsiblity of each CMS customer to establish their own criteria
as to exactly what constitutes an unacceptable amount of time during
which call data remains unavailable for analysis and review.