Dropbox - IF the System Hard Drive is full
There would be chances where users syncs their Dropbox locally to their Laptops prompting their hard drives to be full.
We highly suggest that users use the cloud only setup where Dropbox is being access via web. another option would be using the smart sycn where User only chose the important folders be saves locally for synching.
Further Info can be found below link:
https://help.dropbox.com/accounts-billing/space-storage/low-disk-space
Troubleshoot disk space issues
If you see the error message “You are running out of disk space” (Windows) or "Your startup disk is almost full” (Mac), then your computer is low on hard drive space.
If you see the error message “Your Dropbox is full”, then your Dropbox account is out of storage space.
Not using Dropbox yet? See how Dropbox can help you save space.
You have a few options if you’re running out of space:
Use the Smart Sync or selective sync features
Smart Sync is only available to Dropbox customers on Dropbox Plus, Family, Professional, or Business plans. Selective sync is available to all Dropbox users, including those on the free Basic plan. Both are features of the Dropbox desktop app that help you save space on your computer while still keeping your files in Dropbox.
Learn how Smart Sync works.
Learn how selective sync works.