Designing high-availability SCADA systems with redundant servers, communication paths, and automatic failover for continuous industrial control.
Industrial SCADA systems are critical infrastructure where unplanned downtime carries significant operational, safety, and financial consequences. Unlike IT systems where 99.9% uptime (8.7 hours of downtime per year) may be acceptable, continuous process industries often target 99.99% availability for their control systems. Achieving this requires redundancy at every layer: servers, network, field communication, power, and storage.
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SCADA/ICS System Architecture — Extended Practice Exam
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DNP3 vs. IEC 61850
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