We're planning to upgrade our AD forest and domain functional levels from 2003 to 2008r2. Management would like a fallback strategy. All of our AD controllers are VMware virtual 2008r2's. What would be your suggested fallback strategy?
1. Shutting down each of our 4 DC's, FSMO role holder last, and taking VMware snapshots of each. To revert, we would take all DC's offline, revert to the snap on all, and boot each of them up.
2. MS System State restores - The domain would be taken offline, each DC would then be restored from a system state backup to its original state.
I'd greatly appreciate your suggestions and ideas!