come on guys its been said time and time again. if youre going to back up a game, FOR GODS SAKE check the compatibility list first!
http://tiny.cc/psjbcl

this people replying in this thread shouldnt have to do it all for you. do some basic research, it isnt tough and in the end it will save you time.

as for the person asking about what good the ftp server does? well, for one, it allows you to transfer your backups from your internal HDD for uploading, or from your computer's HDD to your internal HDD, in case the game doesn't work on an external drive. for example, i could download darksiders on my pc, and transfer it to my internal ps3 drive, and play it, whereas it wont work on an external drive.