How many copies of your website do you maintain? Squirreld away. Inserted here and there on USB, removable hard drives, egads, even 1.44mb floppies?
I keep three. The Site, The Local, and a rotating DVD (fixed by date).
Just experienced a horror story which paid s few bucks to do the forensics necessary to help a fellow webslinger who, over the years, managed to create nine (9) different backups in odd places of his site, with different snapshots of "half directory here, half directory there" and had a stroke. While he worked on getting better (he is!) he nearly lost his site to expired domain (his wife asked me what that email meant). Saved, but he got hacked (a few poor js forms) and needed to be restored with hardened js.
A bit of a nightmare as his backups made no sense. So, while this tale has a happy ending, it was a nightmare to accomplish. So, just asking, what are your back up practices?