If your work in a collaborative environment you share files. A hazard of sharing files with others is someone will at some point delete or modify your files. Too many cooks in the kitchen spoils the soup. Varonis created a good document explaining how to enable auditing on your server so you can discover whom tampered with your files
Ok. So you see that Fred deleted your file yesterday. You have a backup, right?
Backups are great but there is another way to get back you file without having to restore from backup.
Previous versions is a feature you can enable on you Windows server or desktop. On a server you would enable shadow copies on the disk where the files are located.