Redundancy

Redundancy in Plant SCADA can be defined at many different levels. When building redundancy into your system, you need to consider the degree of protection necessary to meet your requirements. This will involve the following:

• Decide how important each processes is.

• Determine the overall likelihood of system downtime, and the processes and equipment that will take the longest to restore to service.

• Decide which components require redundant operation.

• Consider design and maintenance requirements.

The section covers the following redundancy concepts:

• I/O Server Redundancy

  • I/O Device Promotion

  • Redundancy and Persistence

• Data Path Redundancy

• Network Redundancy

• Report and Trend Server Redundancy

• Alarm Server Redundancy.

Note: Use the Setup Wizard to define the level of redundancy you require by defining the function of each computer (see Run a Project using the Setup Wizard).

See Also

File Server Redundancy

Redundancy of Standalone Systems