The new update of Windows 10, called "Redstone 5", scheduled to be released in November, will change how files are managed and cleared while the storage is being released.
Announcing the "Insider Build 17758" release, Microsoft said Storage Sense will automate file management with automatic removal of local copies of "older and unused" files. The process is called "dehydration" and will not affect the files labeled "Always keep on this device".
The system will select the files based on the date they were last opened. Files that have not been opened for a long time will be downloaded to OneDrive to free local storage.
An entry will lead to the file stored in the OneDrive which will replace the original file. When the user needs to access the files that have been uploaded to OneDrive, the data will be retrieved seamlessly from the storage cloud using this one.
However, the Storage Sense it will not upload all of your old files you've forgotten to exist. "Dehydration" will only occur when your computer has low storage capacity. So if you have a terabyte of storage, the cleaning day may never come.
Storage Sense is already able to remove files, such as system logs and unused thumbnails, but they take up space in memory. The Storage Sense sweep is run periodically or automatically when the system has a lack of storage space.
You can test this feature if you use "Insider build 17720" and later versions. Go to Settings> System> Save. Click 'Change how the space will be automatically released'.