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Upgrading to SP2 of Exchange 2010

Our environment is currently Exchange 2010 SP1, update rollup 6. I want to deploy SP2. I know I have to do another schema update. So all I do is run setup /prepareschema in our Forest root, then wait a few days before rolling out? I also ready that SP1 and SP2 coexist nicely so you can somewhat take your time rolling out but to do it as soon as possible. I plan on getting it done in 1 weekend. I have 15 servers to update. Anyone else upgrade from a similar environment have anything worthwhile to report? Just want to make sure I cover all my bases. As much as you read, test and prepare, it always feels like you are fogetting something. Our Window OS version is 2008 R2.
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osiexchange
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osiexchange
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AmitIT ArchitectCommented:
i did for 80 server sometime back and wrote this article. Follow it
http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_10389-Steps-for-Upgrading-Exchange-2010-SP1-to-SP2-with-RU3.html

just tell me, if you are using OWA proxying i will tell you what you need to backup for that.
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AmitIT ArchitectCommented:
If you are using OWA proxying, then you need to copy this folder and save it to alternate location.

E:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\14.1.339.1

Once you upgrade the server to SP2, then check the OWA and if OWA proxying is failing this folder back to old location.

Why? SP2 upgrades remove or replaces the folders, and if cannot upgrade all server to SP2. Meaning, you have mix of Sp2 and Sp1, then OWA proxying will fail for Sp1 servers.

Just tell me your env, how it is setup, all server in one location or spread globally?
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osiexchangeAuthor Commented:
We don't use OWA proxying. All our CAS servers are Internet facing and in the same Site. In fact, all our Exchange servers are in the same Site except for our DR servers of course.
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AmitIT ArchitectCommented:
One site is easy. Plan accordingly.
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osiexchangeAuthor Commented:
You don't mention the Schema update in your article. Was it just a setup.com /prepareschema in the Forest root? I don't need to run another setup.com /preparedomain again, do I?
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AmitIT ArchitectCommented:
GUI Setup do it automatically. However, you need to part of Enterprise and Schema admin group.

Else you can do it separately.
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osiexchangeAuthor Commented:
I usually do this in two parts. I push out the Schema updates first and then wait about a week. Then start the SP installs if there are no issues.
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AmitIT ArchitectCommented:
I also use the same path. Please use your option.
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