Backing up to two different drives

I currently backup everything using time machine onto a 1TB hard drive. I have another external drive where I store all my movies and videos (2TB). I recently came into possession of another 2TB hard drive. I'd like to use that to backup my movie drive. Is it possible to use Time Machine to put backups to two different hard drives? The one I'm using now doesn't have enough capacity. I can't use the 2TB drive either since the total capacity I need is 2.5TB. I looked on TM settings but didn't see where I could back up to two different drives. Any recommendation would be appreciated.