Cisco OL-6349-01 - Manual (Page 2)

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Cisco Info Center Installation and Configuration Guide, 3.6.1
OL-6349-01
Chapter 6 Desktop Info Servers
Installing a Dual Server Desktop Architecture
Desktop Info Server Architecture Overview
The Desktop Info Server architecture uses a Master Info Server and one or more Desktop Info Servers
to share the duties normally performed by a single Info Server. Alerts appear for operators on a dual
server desktop (DSD). The main functionality of the DSD is the same as a standard desktop; for
operators, the DSD functions identically to a standard architecture.
DSDs connect to a single, Master Info Server when performing writes, but read alert data from Desktop
Info Servers. This ensures rapid desktop responsiveness by updating the Desktop Info Servers, while
maintaining high data integrity and consistency by simultaneously updating the Master Info Server.
Figure 6-1 shows an example DSD architecture.
Figure 6-1 Dual Server Desktop Architecture
.
The DSD connects simultaneously to the Desktop Info Server and the Master Info Server. Any user
actions (for example, tools or journal actions) performed in the DSD are sent directly to the Master Info
Server through a one way SQL connection and are optionally sent to the Desktop Info Server through an
IDUC connection.
Alerts in the Master Info Server are sent to the DSD through the Desktop Info Server. This is achieved
using a unidirectional gateway from the Master Info Server to the Desktop Info Server and an IDUC
connection from the Desktop Info Server to the DSD.
When users start an Info Desktop, they must select an Info Server to connect to. If the Info Server that
the user connects to is configured to use a DSD architecture, then the Info Desktop connects to the
Master Info Server when performing write operations but connects to one or more Desktop Info Servers
when performing read operations.
Installing a Dual Server Desktop Architecture
The Cisco Info Server installation program, OINSTALL, automates the process for installing a DSD
architecture. When you install the Info Server component, the installation script prompts you whether to
install a Dual Desktop architecture.
Desktop Info
Server A
Dual server
desktop A
SQL connection SQL connection
IDUC connection
IDUC connection
Unidirectional
gateway
Unidirectional
gateway
Desktop Info
Server B
Dual server
desktop B
Master info
server
Master info
server
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