50% Data Exchange (pictures, movies, films) and 50% daily backups of all related labor documents and images: that an office burns down and data would be gone, this risk is gone, my office hangs evening even on your keyring, it is everywhere - at this price, I will back up with several sticks in different directions (for customers, images, documents, private, business, etc.) and place it in different places. Technique that works silently.