Help me understand the Lightroom CC file structure - multiple file locations?

[olis43900543]

Wondering if someone can help. 

I use Lightroom CC, having migrated from Lightroom Classic a few years ago. I have around 300gb of photos synced to the cloud. Currently I have the following folders which I believe are to do with Lightroom CC:

Folder: Lightoom CC - 309gb

and

Lightoom Library.lrlibrary - 339.1gb

I am right in thinking .lrlibrary file is the main storage of the original photos? If so, do I require the Lightroom CC folder if this is just doubling up? I when a drill down to the folder the structure is a 'Originals' folder. 

Am I able to delete one of these so as not to double up on the same items?

Many thanks in advance!

[Timothy.Spear]

I am not positive on this, but based on what I have read:

The folder Lightroom CC is the local cache, includes any smart previews downloaded or generated local prviews applying develop settings to an image.

The Lightroom Library is downloaded original images.

Tim

[JohanElzenga · Accepted solution]

The 'Lightroom CC' folder is most likely a left over from when you migrated. You should not need it anymore. You can verify this by renaming it and then see if that influences Lightroom in any way.