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there is no issue in placing all the default server roles in two server and configuring them as a DAG and CAS array.<br />
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We are supporting a client in a same way. only 2 server both installed with M,C &amp;&nbsp;H roles configured as DAG and CAS array and a Load balancer. <br />
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To place the FSW, they have a seperate file server.
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there is no issue in placing all the default server roles in two server and configuring them as a DAG and CAS array.

We are supporting a client in a same way. only 2 server both installed with M,C & H roles configured as DAG and CAS array and a Load balancer.

To place the FSW, they have a seperate file server.

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I have a client who wants a redundant Exchange configuration but wants to limit the number of servers and Exchange licenses. I was thinking of two servers each running Exchange Enterprise with the mailbox, hub transport, and CAS roles installed on each server. I would then create a DAG for mailbox redundancy and a CAS array using two Kemp load balancers.<br />
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Is there any technical reason why I could not place all of the Exchange roles on each Exchange server and create the DAG and CAS array?
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I have a client who wants a redundant Exchange configuration but wants to limit the number of servers and Exchange licenses. I was thinking of two servers each running Exchange Enterprise with the mailbox, hub transport, and CAS roles installed on each server. I would then create a DAG for mailbox redundancy and a CAS array using two Kemp load balancers.

Is there any technical reason why I could not place all of the Exchange roles on each Exchange server and create the DAG and CAS array?

Exchange Server Configuration for High Availability

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.