Historian Server

The Historian node leverages SQL Server to run the AVEVA Historian software. The Historian stores all historical process data and provides real-time data to System Platform client applications such as AVEVA OMI and InTouch HMI.

The Historian node does not require a Platform. The Application Object Server pushes data (configured for historization) to the Historian node using the Historian software.

In most cases, Historian Server should be the only product installed on the Historian node because of the I/O and memory requirements associated with running the Historian.

Prior to System Platform 2023 R2, the default HCAL port for Historian was 32568. In System Platform 2023 R2, the default is 32565. For REST APIs, the default port is 32569.

Best practice

Most system topologies combine the Historical and Alarm databases on the Historian Node. Configure the alarm system using the Alarm Logger™ utility, which creates the appropriate database and tables in Microsoft SQL Server. For requirements and recommendations for alarm configuration, see Implement alarms and events. For information about historization, see Historize data.