How often is a history block created in the AVEVA Historian?

A history block in AVEVA Historian is created automatically at scheduled intervals, which is a key aspect of how the software manages data collection and storage. This functionality allows for continuous data logging, ensuring that data is captured consistently without requiring manual intervention. By creating history blocks at defined time intervals, the system can efficiently manage and archive data, making it readily available for analysis and reporting.

The scheduled creation of history blocks is crucial for maintaining an organized structure of the historical data and supports the requirement for timely data retrieval. It helps optimize storage and improves access to historical trends over time, enhancing overall data analytics capabilities.

In contrast, other options suggest less flexibility or irregularity in data capture. For instance, creating a history block at the end of each day could miss important data if applicable events occur throughout the day. Similarly, monthly history block creation would lead to significant delays in data availability. Creating a block only when data is entered would not facilitate continuous monitoring and could lead to gaps in the historical record if data entry is irregular. Thus, the automatic creation of history blocks at scheduled intervals represents the most effective approach for managing time-series data in AVEVA Historian.