I have a issue where I keep asking Lightroom (the new one) to stop storing files localy. And yet it still seems to do this. I have around 900GB of duplicate orginal files taking up space on my computer. Can I delete them and still edit them on lightroom? or will lightroom loose everything - even though they are supposedly all stored on the cloud?
The file path seems to be Lightroom CC > (long jumble of letters and numbers)> orginals > 2021 > Date > raw image
The answer to your questions depends upon your sync state:
If you are 100% synced to the cloud - you should be able to delete the folders to regain space - that said, to be safe, it would be prudent to rename the folder to "Lightroom CC > (long jumble of letters and numbers)> orginals > 2021 > Date > raw image old" and make sure everything works before you delete the folder. Even then, I would recommend making a backup of the folder (sort of a belt and suspenders approach).
If you are not 100% synced or are not sure if you are - don't touch the folder.
Generally Lightroom has a systematic operation running in the background which frees up this space over time (up to 30 days). If you've exceed the 30 days and are synced - then a rename-verify-backup-delete may be in order.
If using Windows, what options do you have specificed under the preferences for local storage? (Edit menu -> Preferences -> Local Storage).
Be aware, Lr has a pretty complex cache system. If everything has been synced, yes you can delete the cache localy when Lr is closed. Lr will download originals as needed on demand based on what you are doing. However, before doing so, please post the path and the information from the dialog I mentioned above to ensure you are deleting the correct location.