sorry we've confused you.
8000 pictures, based on your comment, suggests 40-50 gb. That would be about 10 dvds - not really a lot, these days.
You need a DVD burner - and if you have a DVD burner, you have a way to play dvds on your computer as well - and we're not talking dvd movies, we're talking "data" - consider THESE dvds just a 4.5gb disks.
And they are cheap these days - you can get blanks for less than 40 cents each.
Now - other suggestions are an external hard drive - remember you have maybe 50gb of photos - you can buy an external (connect via usb) 500gb (that's 500 - vs 50) for like $60-75 these days.
Two good options to backup your photos - and I agree with everyone here - you should have the info in 3 places - on your computer, on a backup, and on another backup.
Why 3? Well, best of all - keep ONE of them NOT at your home. (What if your home burned down - all gone!) I keep one of my backups at my Mom's house, one at home, and of course my computer.
Sure, the one at Mom's only gets updated like once a year - but it has everything up to the last year.
Dan T. Davis