MCP DriveTrain and upgrades: a few questions and answers

Mirantis Field CTO Ryan Day recently sat down to demonstrate how users can use Mirantis DriveTrain to upgrade OpenStack over two versions, from Mitaka to Ocata.  Along the way, he answered a number of different questions about how it works, and what DriveTrain is all about.  You can view the entire demonstration, and we’ve decided to provide the answers here as well.