What is the default duration for a history block in AVEVA Historian?

In AVEVA Historian, the default duration for a history block is set to 1 day. This means that when data is archived, the system is configured to hold and manage the historical data generated over a 24-hour period. Setting the default duration to 1 day provides a balance between data retention and system performance. It allows users to access recent data efficiently while also avoiding excessive storage requirements that might arise with longer durations.

The selection of a 1-day default duration is a practical choice, as it optimizes the archival process for many applications by ensuring that data is readily available for analysis without overwhelming the system. Users can, of course, adjust this default setting to cater to specific business needs or operational requirements, but the 1-day duration serves as a standard baseline for typical implementations. This approach helps in maintaining the efficiency of data retrieval and management within the historian environment.