I wrote previously about my fairly modest workflow for image-archiving and backup in the following two articles, and while I continue to use this method, some of the aspects may be a little outdated, or inadequate for those with large storage requirements:
Chase Jarvis: Complete Workflow and Backup for Photo + Video (includes a video explanation)
I still wish Apple hadn’t dropped its plans to incorporate the ZFS filesystem into Mac OS X. If it had done, all this would be one heck of a lot easier. Very few backup systems – ZFS being one that does – are actually capable of dealing with the not-inconsiderable problem of bit-rot.