Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 345)

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Setting up FactoryTalk system availability
This chapter describes:
 What it means to maximize availability in a FactoryTalk system.
 Monitoring the status of application servers.
 Monitoring the status of the FactoryTalk Network Directory server.
 Redundancy as part of a system availability strategy.
 Setting up a redundant HMI server.
 Determining the Active HMI server in a redundant pair.
 Switching the Active and Standby HMI servers manually.
 What happens when the primary HMI server fails.
 Modifying HMI tag and alarm properties at run time.
 Managing HMI data in an online redundant system.
 Monitoring network client and server connections.
FactoryTalk features that maximize system availability
An automation and control system that uses FactoryTalk services, and integrates
FactoryTalk products and components, is known as a FactoryTalk system.
A complete FactoryTalk system consists of all the networks, devices, and software
applications you have deployed, to monitor and control your plant or process.
Helping to ensure that the system can provide data in a secure and predictable fashion
depends on a number of variables.
To minimize data loss and down time, and to help ensure that critical parts of your system
are always available to connected clients, FactoryTalk View Site Edition provides these
health monitoring and redundancy features:
 Server status monitoring of non-redundant and redundant application servers. For
more information, see page 14-2.
 Disconnected operation . For example, connected clients can continue to run when
the FactoryTalk Directory becomes unavailable. For information, see page 14-7.
 Redundant application servers . In a network distributed application, you can set
up redundancy for the following types of application servers: