Which of the following parameters can be adjusted in the Runtime configuration for AVEVA Historian?

In the Runtime configuration for AVEVA Historian, adjusting the HistoryCacheSize parameter is crucial for optimizing how historical data is managed and accessed. This parameter determines the size of the cache that the Historian uses to store recently accessed historical data in memory.

When the HistoryCacheSize is set appropriately, it can significantly enhance the performance of data retrieval operations, allowing for quicker access to frequently requested data without needing to read from disk storage. A larger cache can reduce the load on the disk subsystem and speed up query responses, especially in scenarios with high data access rates.

While other parameters like BlockSize, DataVolume, and AccessFrequency are indeed important for the overall configuration and performance of the Historian, they do not directly relate to the caching mechanism that facilitates rapid historical data access. Adjusting the HistoryCacheSize specifically impacts how efficiently the server handles requests for historical data, making it the right choice in this context.