Windows’ version of Time Machine
Shadow copies is a feature introduced in Windows XP that kept incremental versions of your files in case you ever needed to restore files and folders from the past. As of Windows Vista, its role has been made a little effective. It is accessible on the “Previous versions” tab of file and folder properties as a list of versions in the past. If you use it on a folder, you can open a folder as if you were back in time and copy files out of it at your will. Just right click a folder or file, click “Properties,” and select “Previous versions.”