Hi we are planning to raise our domain functionality level to 2008 R2 from 2003 and I have a couple of questions.
This is our environment:
3 2003sp2 DC's (all of them have dns with ad integrated zones) all of them are GC's
The plan is to install 3 new 2008 R2 DC's and demote all of the old ones.
I plan to take full backups (including sys state) of 2 of the DC's and take them offline before touching anything.
DC1 holds all of the fmso rolls is it the correct way to keep that one online?
After that i want to introduce a 2008 R2 member server and promote it to DC and transfer all of the fsmo rolls to it and to setup all replications and stuff with DC1.
When i get that working fine i will add 2 more 2008 R2 DC's and finally demote DC1 (old 2003).
Then I have to cleanup metadata of all the old 3 dc's right?
If this goes wrong i want to be completely sure to be able to roll back everything, but i'm a little unsure of wich steps I have to go through in the forest recovery process.
Can I do it like this:
Take all DC's offline and power up one of the 2003 DC's that has been offline during the whole process (thus knowing nothing about any changes) and cleanup metadata of the other 2 2003 DC's + seizing the fmso rolls and make it the owner of all fsmo rolls, and after that install new DC's and just replicate everything to them. Sounds a little too easy so I guess I have to do more than this? :)
Please give me your thoughts about this, am i completely wrong and am i forgetting something?