What is Historian?

AVEVA Historian is a robust, high-speed data historian designed to manage the vast volumes of data generated by modern industrial operations. It ensures fast data acquisition, efficient storage, and rapid retrieval for analysis and reporting.

Fast and Flexible Data Acquisition

The Data Acquisition subsystem captures high-speed data from a variety of sources, including:

• AVEVA I/O Servers and DAServers (via SuiteLink protocol)

• InTouch HMI software

• Application Server

• Other industrial devices

It supports analog, discrete, and string data types, with time and quality stamps for accuracy.

Efficient Data Storage

The Storage subsystem compresses data to maximize storage efficiency. It stores:

• Real-time plant data

• Alarms and events

• Summary and configuration data

• Security settings, backups, and system monitoring information

Rapid Data Retrieval

The Retrieval subsystem handles SQL queries and supports REST and SDK interfaces, enabling fast access to large datasets for analysis and reporting.

Secure Data Replication

The Replication subsystem ensures data redundancy by:

• Replicating tag values to other AVEVA Historian servers

• Calculating and replicating summary data

Advanced Time-Series Querying

AVEVA Historian extends SQL with time-domain capabilities, allowing:

• Time-series data queries

• Control over data resolution (e.g., evenly spaced samples over time)

Visual Data Exploration

The built-in Insight tool allows users to:

• Search and explore data quickly

• Create, save, and share clear graphical content