That reminds me, I need to backup my laptop....I back up every week onto a 1 TB disc drive. A few years ago I lost 3 years of raw, unedited photos because I didn't back up.
Now I have my photos, raw and unprocessed, on:
The desktop drive
The external drive
Mitsui Gold DVD's in a safe deposit box
Photo hosting website
Various USB sticks
Never, EVER will take a risk a again.