Keeping same hostname on DC after upgrading from 2003 to 2008

Hello,

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.

The particulars:

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.


 
jarak08Asked:
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snusgubbenConnect With a Mentor Commented:
When you demote a DC it becomes tombstoned and is not removed until the Garbage Collector picks it up. Although this is not the GUID, there can be some issues with the NTDS object.

http://blogs.technet.com/b/instan/archive/2011/01/12/dcdiag-and-the-not-n-sync-home-server.aspx

What ever you decides to do, you should delete the empty Server object in AD Sites & Services after the demotion and verify that DNS is not holding any references to it. (Records and references in the forward lookup zone).
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ThorinOCommented:
Personally I would just do an in-place upgrade without demoting/promoting.
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jarak08Author Commented:
2003 server is currently 32 bit, so I can't perform an in-place upgrade.
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jarak08Connect With a Mentor Author Commented:
after much googling, i found a blog which was helpful in the ordering of the steps needed:

http://msmvps.com/blogs/acefekay/archive/2010/10/09/remove-an-old-dc-and-introduce-a-new-dc-with-the-same-name-and-ip-address.aspx
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jarak08Author Commented:
I think I answered my own questions better than the one to which I am awarding points.  That solution was helpful in a general sense, but not specifically to all my questions.
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