We are in the process of upgrading our domain from 2003 to 2008. Right now we are towards the end of the migration -- we're upgrading the last 2003 domain controller to 2008.
DC01 is still running 2003 32-bit -- roles: GC, DNS, it was FSMO.
DC02 is running 2008 R2 Std, GC, DNS, and FSMO roles have already been transferred to it.
These generalized steps are what I think I should do for the last dc, but I'd like someone to sanity check please:
1. demote DC01.
2. clean install 2008 R2 Std
3. after install, keep existing hostname of DC01
4. join to domain
5. dcpromo DC01 to dc
-- The real question is: can we keep the hostname "DC01" ?
(Someone I talked to suggested that I just use a new hostname instead of keeping my old hostname. He thought that there may be lingering AD metadata.)
-- Should I delete any DNS entries for hostname DC01 after demoting?
-- How long should I wait between demoting DC01 and joining DC01 back to domain / promotion?
-- Should I perform a metadata clean up to make sure there are no lingering references to the (old 2003) DC01 ?
or should I do steps 1, 2, 3 (but with new hostname), 4, 5, and then re-name back to DC01 after it becomes a dc ?
thanks in advance.