Updating Exchange 2010 SP3 from Ver 14.03.0169.001 to Ver. 14.03.0248.002 RU 10 Latest

Hello,

We have the following environment:  Please take some time to look at everything

Version
Organization
Server Configuration
Database Availability Groups
This is the first time i update exchange 2010 SP 3 ever.  I was going to follow the instructions from microsoft listed here http://blogs.technet.com/b/rmilne/archive/2015/06/16/exchange-2010-sp3-ru10-released.aspx

And here http://www.oxfordsbsguy.com/2015/06/30/exchange-2010-sp3-update-rollup-10-released-and-installation-tips/

Now I understand that i should update the internet facing CAS servers first according to what i have read.  Now, since we dont have a test environment, i was planning on updating our Backup/Failover CAS and Mailbox servers in Sterling, VA first, and then a week later roughly, install the update on our Production Miami CAS and mailbox servers.  Will this work ok?  

My concern is, that exchange will F***UP having some of the servers Updated while the others are still on the old version.

Your thoughts please
JB BlancoSr Systems EngineerAsked:
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JB BlancoSr Systems EngineerAuthor Commented:
Amit,

I am not upgrading from a lower SP.

i am currently on SP3 version 14.03.0169.001 and i just need to update to the latest RU 10 here http://www.microsoft.com/en-us/download/confirmation.aspx?id=47676
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AmitIT ArchitectCommented:
Then you don't need to follow all those steps. follow this.

1) Run windows updates on your hub/cas server. Restart the server. One server at a time.
2) Then run the RU10 update on each server hub/cas serve. Restart the servers. Again one at a time
3) Now your hub/cas are completed to RU10. Next you need to upgrade mailbox servers to RU10.
4) Use the DAG maintenance script. Open EMS in admin mode, goto to script folder and type:
.\StartDagServerMaintenance.ps1 -serverName servername
5) Once above command completes. Then install OS Updates first and then RU10. Restart your server.
6) Once mailbox server is up. Run below command. Follow same steps on other mailbox servers.
.\StopDagServerMaintenance.ps1 -serverName servername
Finally, run this command:
\RedistributeActiveDatabases.ps1 -DagName DAGName -BalanceDbsByActivationPreference -ShowFinalDatabaseDistribution -Confirm:$false
7) Once you are done with all Exchange server. Now you need to upgrade RU10 on your tool server. Meaning if you have Exchange console on you system like Win7 machine, You need to upgrade that also.
8) Test Exchange services, logs etc and open Outlook, OWA, Active sync. Test connections and send test emails.

Let me know, if you have any more doubt. follow my golden rule, " One server at a time".

Note: Take DB backups before you start any patching.
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JB BlancoSr Systems EngineerAuthor Commented:
Amit,

thank you for these detailed instructions!

Can you please answer my question about whether its ok for me to upgrade just the HUB/CAS servers in Sterling VA (these are our failover Servers) and then a week later, update the rest of the Hub/CAS servers and Mailbox Servers?  

Will exchange work fine having just the Sterling VA HUB/CAS Servers updated to RU 10??
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AmitIT ArchitectCommented:
I assume Sterling VA means DR site servers. Yes, you first run RU on DR site. Say you have Site A Primary and Site B DR.

In this case you upgrade Site B Hub/CAS first. Then you can wait for few days, then upgrade Site A Hub/CAS. Next you can plan to upgrade mailbox server on both site. I prefer to avoid RU mismatch on mailbox role. So, when you plan to upgrade mailbox role. Upgrade Site B mailbox servers and then Site A. Try to complete in short span. Do not leave for a week or so. In case you need failover, then you could face issues due to RU mismatch.

Hope that answers your query.
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JB BlancoSr Systems EngineerAuthor Commented:
Yes Sterling VA, is our DR site :)

Thanks I will give this a shot
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JB BlancoSr Systems EngineerAuthor Commented:
Hey what about rollback proceedure.

I went ahead and created snapshots of the vm's since our exchange environment is totally Virtual.

Is it just a simple revert back to snapshot?  or does the update ru 10 itself have a rollback feature?
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AmitIT ArchitectCommented:
Very Big NO to snapshot. Remove Exchange snapshot word from your dictionary. For RU, you just need to remove it from all servers, however, I don't see any reason for removing RU, I might troubleshoot to fix it. In case you have still issue in rolling back or recovering the server. Follow my article:

http://www.experts-exchange.com/articles/18110/How-To-Recover-Failed-Mailbox-Sever-In-Exchange-2010-DAG-Environment.html
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JB BlancoSr Systems EngineerAuthor Commented:
Went pretty smooth!  thank you!
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AmitIT ArchitectCommented:
Great :)
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