With digital photography, protecting your data is part of business. You have to put forth every effort to protect your images for your sake and your clients'. When I used a PC, I had a very robust backup and storage strategy that included 2 separate copies of all files on-site and on copy of the data stored on-line through a cloud service. When I upgraded to my Mac, this became less automated; and, for a short time, very clunky. I have reorganized my data storage back to a robust storage solution that is automated and helps me sleep at night again. This included adding more external hard drive space and more memory to the Mac.