Solved

Best way to setup a CAS Array in a DAG enviroment in mulitple sites

Posted on 2013-01-04
4
455 Views
Last Modified: 2013-01-16
I have a client that wants us to setup a DAG enviroment for them with their exchange 2010 and they want one of the 2 servers in the dag to be at another site. My questions is what is the best way to setup the CAS Array between the 2 different sites so that in the event that the server at the main site goes down, how would the users connect or what would need to be done for them to be able to get their email now from the remote server in the DAG?
Would this involve changing of MX records possibly or whatever else?
0
Comment
Question by:vmich
  • 2
  • 2
4 Comments
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 38743914
CAS Array has nothing to do with the MX records.
It is for Client Access Only and should be an internal record, it does not need to resolve externally and should not be on the SSL certificate.
CAS Array's are also AD site specific. Therefore if you have two sites you would have an RPC CAS Array in each site. In the event of a failover the DNS entry would be pointed to a server in the other site. That would either be a manual change or automatic using a load balancer.

If you already have Exchange 2010 live and users on it, then implementing the CAS Array is going to also require visits to the clients. They will not use it automatically.

Simon.
0
 
LVL 1

Author Comment

by:vmich
ID: 38743920
They are currently on exchange 2010 and we will be building them 2 new exchange 2010 servers in the DAG enviroment and migrating the users to the 2 new exchange 2010 servers.
0
 
LVL 63

Accepted Solution

by:
Simon Butler (Sembee) earned 500 total points
ID: 38743937
My point above still applies.
Even though you are moving the mailbox, the client will NOT update to use the RPC CAS array host name, it will continue to use the old server because it is still valid. You either have to touch the clients manually to get them to update (so set the RPC CAS Array on all databases in the site) or cross your fingers that autodiscover will work when the old server is removed. You cannot test that though, because AUtodiscover will only kick in if the old server has gone, being shutdown is not enough.

Simon.
0
 
LVL 1

Author Closing Comment

by:vmich
ID: 38782921
solved
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Utilizing an array to gracefully append to a list of EmailAddresses
Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Ac…
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question