This story was posted originally on 24.10.2020 with fotoARRAY Version 1.
To stress-test the database I imported all the images from the external drive. After the images were loaded into the database I reassigned the drive letter (on windows) and imported the root directory again. So duplicates of the previous run were imported. I repeated this.
In the end I had imported over a million images and fotoARRAY was still responsive and usable.