Fault tolerant mechanism for mission-critical SCADA system

Customer

DATAC Technologies Ltd. (former RealFlex Systems Inc, USA).

Main project metrics

15 MM of architectural design, prototyping, development and testing.

Description

Add-on solution to the real-time SCADA engine. A specially developed software failover mechanism which enables 2 SCADA computers to run in parallel and keep back up node always synchronised with the main one. Back up SCADA node is acting as a hot standby to main node. All real-time process data from main node are forwarded to standby one. Any SCADA project/configuration changes on main node are virtually instantly mirrored to back up node. In case of main node failure the backup node takes over control in real-time without loss of process data. Every effort was made to minimize overall down-time which is extremely essential for mission critical control systems.

Platforms, technologies and development environment used

QNX6, GNU C++ (gcc compiler), STL, CVS.