Building Redundancy Into Your System

Redundancy in CitectSCADA can be defined at many different levels. When building redundancy for your system, it is important to consider the degree of protection necessary to meet your requirements, by:

• Defining how important your processes are;
• Determining the overall likelihood of system downtime, and the important processes and equipment that will take the longest to restore to service;
• Deciding which components you would like to implement redundancy for; and
• Considering design and maintenance consequences of redundancy.

The section covers the following redundancy concepts:

• I/O Server Redundancy
• I/O Device promotion
• Redundancy and Persistence
• Data Path Redundancy
• Network Redundancy
• Alarms, Reports, and Trends Server Redundancy

• Note: Using the Computer Setup Wizard will allow you to define the level of redundancy you require by defining the function of each computer (See Running the Computer Setup Wizard).

See Also