Redundant Servers

Introduction

The Fernhill SCADA Server provides the option of working in a redundant configuration:

Fernhill SCADA Configured to run in a redundant configuration.

There are two Fernhill SCADA Servers in a redundant configuration. One server operates as the active server and the other server operates as the standby server.

The active server runs Drivers to:

Scan data sources: PLC, RTU, IoT Devices.
Provide data to client applications.
Run IEC 61131-3 Programs.
Generate Text Reports.

The active server automatically updates the standby server with:

Configuration changes
Data updates
Historic data records
Records in the Event Log

The two servers monitor each other. If the standby server detects the active server is offline, the standby server will take over the active role.

When a failed active server recovers, it will detect its partner is now the active server and adopt the standby role.

Setting up Redundant SCADA Servers

The setup procedure is different depending on whether you are:

Further Information

Fernhill SCADA Server

To learn about the Fernhill SCADA Server.

Fernhill SCADA

To learn about the tools in Fernhill SCADA.

Configuration Tool

To learn about configuring Fernhill SCADA.

Glossary

For the meaning of terms used in Fernhill SCADA.