I concur that Free File Sync or Real Time Sync are worth a look. These do an excellent job of creating redundancy at a point in time. If your picture directory is on a second drive, include your editing software .cat files and configuration modifications you have made to the application(s), which sit on the boot drive. Alternatively, regularly making a mirror/clone image of the boot drive is a good practice. Better safe than sorry and cheap insurance. I also recommend you purchase this type of software.