Historian folder

I did some tests on historian and I’d like to delete all entries and start fresh. How do I delete all the data? Can I just delete the folder? If yes, where is the folder? I’m using ignition internal historian.

Internal historian data is stored in a SQLite file (extension .idb) in the Ignition install directory:
${installDirectory}/data/modules/com.inductiveautomation.taghistorian/${internalHistorian}.idb

You can safely delete this file; it’s only used by the internal historian.