Update: I have written an updated version of this series over athttp://webwash.net.

Body: 

In the previous post we built a basic blog feature. This post will cover details on how to manage that feature (i.e. update, revert, etc.).

Prerequisites:

In this Aegir screencast, we'll learn how to backup and restore your site, use the migrate feature to move your site to another platform (or upgrade it) and quickly create a copy of your site (for development or testing, for example).