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Dag in 2 locations

Posted on 2011-03-11
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Last Modified: 2012-05-11
Recently I made aware that we will have to add another exchange 2010 server to a remote office. Remote office is on a different subnet. They have their own DNS, DCHP, & AD server but they are still part of the same domain. There is a 100mb point to point between the remote and main site so bandwidth is not an issue.

From what I understand we can only have 1 cas server per AD domain.

Off the top of my head I was thinking that I can have 1 2010 server at the main site. 1 exchange 2010 at the remote site. DAG it across the WAN

Question I have is, can each CAS server at each location have the RpcClientAccessServer set to the CAS server that's only at their own location?

- we don't want users at the remote location connecting to the cas server at the main office
- we want mailboxes that belong to the users in the remote site to be on the exchange server at the remote site.
- If we could set the RpcClientAccessServer to the CAS server that's only at their own location, would that interfere with how emails will be delivered ?





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Question by:iamuser
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Author Comment

by:iamuser
ID: 35112783
each exchange 2010 server will be running cas, hub, & mailbox roles.
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Expert Comment

by:Akhater
ID: 35113138
>>From what I understand we can only have 1 cas server per AD domain. <<

this is not correct at all  you can have as many as you want

basically you want to have 2 mailbox dbs each one active on the node it is serving and passive on the other node and you set the rpc client access server to the same server name
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Author Comment

by:iamuser
ID: 35114221
that's what I was thinking too but I didn't know if it would be possible.
SITE A            SITE B
Exchange A            Exchange B
MBX A active         MBX B active
MBX B passive       MBX A passive

The only question I have is, what happens if someone who has a mailbox (active) on the exchange A happens to sign onto to a computer in site B and uses outlook? Will they be able to see their emails or would they get an error?

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Expert Comment

by:Akhater
ID: 35114827
he will see his emails but he will connect to the cas server in his own site
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Expert Comment

by:Akhater
ID: 35114829
by his own site i mean where his mailbox db is active
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Author Comment

by:iamuser
ID: 35116502
Does the user initially connect to the CAS server in SITE B before being redirected to the Cas server in SITE A? Or does the user automatically connect to the exchange server in Site A the minute he opens outlook?



 
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Akhater earned 500 total points
ID: 35117006
he will connect directly to the cas specified in his dbs rpc client acceess server
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Author Comment

by:iamuser
ID: 35117313
The DBS rpc client access server is set at the cas server itself. And you can only have 1 per server. I'll have 1 rpc setting on site A pointed to site A cas server and 1 rpc in site b pointed to the cas server in B. When the user (with mbx in site a) opens outlook in site B,  won't the scp return a  value for the local cas server? Which in turn cause the user to connect the local cas server?

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Expert Comment

by:Akhater
ID: 35117615
no it will return the value set on the rpc client access of the DB where its mailbox is located
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Author Comment

by:iamuser
ID: 35117726
I see

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