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CAS Array affect on current users

We currently have two CAS in one AD site and want to create a CAS array.  We are curious to know how this would effect current users.  Will there be any downtime?
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FundFire
Asked:
FundFire
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5 Solutions
 
Haresh NikumbhCommented:
The CAS Array should not have had anything to do with the downtime

http://exchangeserverpro.com/how-to-install-an-exchange-server-2010-client-access-server-array/
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AmitIT ArchitectCommented:
It would affect, if you didn't point your DB's to CAS array name. Once you create CAS Array, old db's need to be pointed to CAS array name using PS. cmd:

Set-MailboxDatabase DBNAME -RpcClientAccessServer
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FundFireAuthor Commented:
I was more so asking about the actual process of setting it up would there be downtime for the users.
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AmitIT ArchitectCommented:
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Simon Butler (Sembee)ConsultantCommented:
Creating the CAS array has no effect on the end users at all.
In fact they will not even use the CAS array until you manually update the Outlook profile. Ideally the CAS Array should be created right at the start - before the server goes live.

Simon.
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FundFireAuthor Commented:
is there no way to force the outlook profile update remotely?
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Simon Butler (Sembee)ConsultantCommented:
No.
It requires a manual visit to the workstation to repair the profile. There is no method to run repair remotely.
The reason for this is quite simple - the current server the client is accessing is still valid, so it will continue to use it. That is why creating the CAS Array at the start is always the best option.

Simon.
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