I wanted to recommend to sifters online backup services, like Mozy and Carbonite. They backup your files as soon as you make changes.
Mozy offers 2 gig of backup free. If you want unlimited storage space, Carbonite costs $55/year and Mozy costs a little more, but Mozy lets you pay on a monthly basis.
There's probably software for external harddrives that does the same thing, which probably protects your data from most risks, but there are still the risks of theft, freak electric events, natural disasters, and extraterrestrial invasions.
My main computer is a little damaged right now (http://geek.videosift.com/talk/Uninterruptible-power-supply-Advice), so I'm glad I recently started a backup subscription.
Mozy offers 2 gig of backup free. If you want unlimited storage space, Carbonite costs $55/year and Mozy costs a little more, but Mozy lets you pay on a monthly basis.
There's probably software for external harddrives that does the same thing, which probably protects your data from most risks, but there are still the risks of theft, freak electric events, natural disasters, and extraterrestrial invasions.
My main computer is a little damaged right now (http://geek.videosift.com/talk/Uninterruptible-power-supply-Advice), so I'm glad I recently started a backup subscription.
If you really need to back up large amounts, I would go with an external HDD. They get to 1TB affordable sizes easy these days, and WD have tiny ones that need one USB port and no additional power at 500GB.
http://www.wdc.com/en/products/products.asp?driveid=700
External storage drives are great for an on site backup, but unless you cart that off to an off site location too, you're vulnerable (fire, theft, etc).
Personally, I'm sticking with regular backups to external drive. Several hundred gigabytes of stuff is a little rough for on-line storage.