What is the purpose of the Lightroom CC ecosystem folder
In the Lightroom Classic CC 7.0 preferences dialog box, there is a tab called Lightroom CC, which contains a panel named Location, which in turn contains a checkbox labelled Specify Location For Lightroom CC Ecosystem's Images, and a path to a folder in the file system. I've set up that location, and it now contains some 300GB of files, in addition to the folder where my DNG images are usually stored.
What is the purpose of this folder? Do I really need to double my storage requirements?
