Think of the size of MySpace. The amount of pages, images uploaded, etc. How do you suppose the back up their site? I mean, wouldn't it take hours, maybe even days to do a full back up of their site? and where do you think the backed up data is moved to? I'm pretty sure there is no hard drive in existence that would be able to store the full backup so they probably do it on many hard drives. Well, I've always been curious about this and only got bothered to ask just now. So yeah, what do you think?
Massivly fast computers. Same as Google, Amazon, Yahoo, MSN...*Insert every other massivly big website.*
What makes you think they do backups? (j/k) There are a number of solutions that are capable of backing up something the size of MySpace. As far as websites go, MySpace is huge. As far as enterprise level backups go, MySpace isn't that big.
I heard they hired a bunch of monkeys to write all the information down on bits of paper. Can't confirm if its true tho.
http://www-306.ibm.com/software/tivoli/ It's not cheap though. If you thinking of something for Jibble your probably better off starting lower end until you really need something like tivoli.
i think Google does not use very good hardware for servers. they have all about 45000 servers of all kinds low end celeron to high end opteron.