I bought my brother WoW for Christmas & he's been playing non stop ever since.
I am also upgrading his computer from left over hardware from my recent upgrades.
In WoW, do I need to back-up anything just in case his HD takes a nose dive in the upgrade process?
Does all his progress get saved on Blizzard's server or on his Hard Drive?
Just want to be on the safe side as he's invested alot of time playing.