I have been asked a few times do I keep all my images? well amazingly I do even though each image is 25 meg, I have a set procedure that is mostly automated A simple rule I've learnt over time, with backups
3 Backup copies of anything you want to keep.
2 different storage media.
1 offsite storage site.
photos are loaded onto my editing PC into lightroom this has 6tb of storage and one copy is kept on a external hard drive when editing is finished,
within 10 mins a copy of images are sent to 1 of 2 home-servers I run with a total of 24 TB of storage .
Two HP Proliant servers with 8 Hard drives in total
so two copies in two places now for the third on the servers I run some software called CrashPlan, this backs up to the cloud, a company in US called Code 42, I have unlimited space on the plan I have. so within 10 mins of me loading the images on my PC I have a copy elsewhere and a copy in the cloud that I can access anywhere in the world.
Crash plan offer lots of different plans for back up check them out here
So when I am asked do I still have them pictures from 2 years ago Yes I do :) If you have any questions on this drop me a line.