Which is a correct statement regarding the deletion of history blocks in Historian Maintenance?

When considering the handling of history blocks in AVEVA Historian Maintenance, it is essential to understand the relationship between folders and history blocks. The correct statement highlights that history blocks are deleted by restoring a folder. This is a function of how data management works within the historian system, where each folder can contain various history blocks.

When a folder containing history blocks is restored, it involves removing the data that was contained within it. This action effectively leads to the deletion of the history blocks associated with that folder. The underlying principle is that folders are the organizational units for history blocks, so operating on the folder level impacts the contained history blocks directly.

This approach provides a structured method for managing collected data, allowing users to manipulate collections of history blocks more easily rather than handling them one by one. Understanding this relationship can help in managing your database efficiently and preserve data integrity during maintenance tasks.