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Upgrade three 2008 (non R2) servers (2 has EX2010) to 2012 R2...

Upgrade two 2008 (non R2)  servers (both are DC and have Exchange 2010) and a 2008 (non R2) server all to 2012 R2...
All x64, all with latest updates. One Exchange has SP2 (KB2903903) and doesn't (some error when I tried.)
Keeping the Exchange as 2010.
Just straight upgrade installation on all 3 servers?  PDC, BDC, then the server?
Or am I asking for trouble?

Oh, the PDC has 2 SATA HDs that are mirrored by OS on C: and D:. What a nightmare last week when it failed to reboot with a FTDISK_INTERNAL_ERROR Stop Code 00000000x58. I really need to do away with OS raid 1 and 2008 server.

Maybe add a 2012 R2 + exchange and move all the services over and demote the old raid 1 server?
Windows Server 2008ExchangeWindows Server 2012

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fixingstill

8/22/2022 - Mon
SOLUTION
Will Szymkowski

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ASKER CERTIFIED SOLUTION
Scott C

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Scott C

And as Will said...Exchange is not supported for in-place upgrades.  From both of our posts, you really need to get Exchange on it's own dedicated machine.

When I was a T3 Exchange Escalation engineer for Microsoft, I wouldn't even talk to you after I found Exchange was installed on a DC.

Do it correctly this time and you won't have to do it again and you will have far less issues.
fixingstill

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So glad I have you guys. Thank you.
Will Szymkowski

What? no split?

Will.
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William Peck
fixingstill

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Will, I am sorry. First time here. I didn't know it is a point based system. I didn't know how to split. I saw something like "multiple acceptable answers" but I guess I clicked the wrong button.".