Well my first backup solution was to use archive grade DVDs.

I would use the backup catalog feature in Photoshop and burn a new set of DVDs once a year. I would also do a quarterly incremental backup.

Unfortunately some years back it stopped working, never did workout why.

Have had a NAS for many years so what I would do is backup my PC (this contains all of my images) to the NAS. Since this NAS was also mirrored to a second NAS everything was safe (that's 3 copies).

The ideal system would be to use the cloud. The only problem in Australia is that we not only have bandwidth caps, but we also have usage caps. This means that you need to be rich to be able to afford Cloud backup.

Upload bandwidth and rates are the worst part which means that this would never be a viable option for me