Lucent Technologies Release 3 Version 8 Connecting HA Servers to the Switch

Connecting HA Servers to the Switch CentreVu CMS R3V8 High Availability
Connectivity, Upgrade and Administration
Overview 2-1
Connecting HA Servers to the Switch 2
Overview 2
Connecting HA Servers to the Switch describes connectivity requirements
and recommendations specific to CMS High Availability (HA) systems. This
information is applicable to the following
DEFINITY Release 8.1 switches:
•Generic 3si (G3si)
•Generic 3r (G3r)
•Generic 3csi (G3csi)
•Prologix Release 3 (G3csi)
The connectivity configurations described in this chapter represent the
optimal link setups for HA systems. Other switch-to-server connectivity
configurations are not described herein. For information about other switch-
to-server connections, see
CentreVu Call Management System Switch
Connections and Administration
(585-215-876).
Server
Switch-Over
Options 2
The primary purpose of the CMS High Availability offer is to ensure an
uninterrupted data stream between the DEFINITY ECS and the CMS system
on which the data is stored. However, some customers may also desire
continuous access to their CMS data. Following a major failure event on their
primary HA server, customers have the option to switch over to their
secondary server for purposes of CMS data monitoring and reporting. A
server switch-over should be performed only when the anticipated down time
for the primary server is expected to be significant.
Customers must choose between the following switch-over options:
1. No switch-over
Customers who do not require continuous access to their CMS data can
choose not to switch-over to the secondary server after the primary
server experiences a major failure event. When the primary server goes
down, uninterrupted collection of call data will continue on the
secondary server, but the customer will not be able to access that data
until the primary server is restored.