I am only an amateur, so my volume of images is not as high as a professional.
This is how I backup to DVD's. My purpose is to backup the LR files along with the LR chan
ges.
I create a YEAR folder, inside that DVD_01, _02, _03, etc folders containing folders of my shoots. Each DVD folder contains a maximum of 4 GB.
After I have finished working with that folder, I click on that folder, select all, then in LIBRARY, FILE,
EXPORT AS CATALOG to a temporary folder on my desktop. I then burn 2 DVD's and store one off site.
In the event of a crash, not only do I recover my files, IMPORT AS CATALOG, but also all my edits in LR.
In the future, I will have larger DVD folders, perhaps 25GB, blu-ray may be that vehicle.