jwz on backups: 'I am here to tell you about backups. It's very simple.' [...] '"OMG, three drives is so expensive! That sounds like a hassle!" Shut up. I know things. You will listen to me. Do it anyway.'
I slightly disagree with the addendum 'P.S., RAID is a waste of your goddamned time and money.' - but I guess it depends on how much of ones time RAID takes (which next to none in my case).