Highly Available NFS Server Setup

I'm following this guide: http://library.linode.com/linux-ha/high … untu-10.04">http://library.linode.com/linux-ha/highly-available-file-database-server-ubuntu-10.04

I've gotten to the point where I'm ready to start drbd, but whenever I try to start it says "Can not load the drbd module". I am using Ubuntu 12.10 if that makes a difference, I know the guide was written for 10.04.

Any thoughts on what I can do to fix this?