Transferring some of my games to the new drive from the standard hard drive I had them on has been a bit more difficult. I've had to do some tinkering to get my Battle.net and Steam games to work without having to download them all back from scratch. The process has taken a few hours, and it looks like there is still some more work to do. Still, I've already noticed an improvement in their load times as well.
Mostly, I'm glad that I will no longer see those error messages about low disk space.