Hello

I am going to deploy Exchange 2013.

DC:2008R2

Server01:MBX+CAS - Server 2012 Standard + Exchange 2013

Server02:MBX+CAS - Server 2012 Standard + Exchange 2013

DAG(MBX) and HA with CAS

Well Windows NLB Won't work and a third party load balance solution is not an option right now.

So I'm wondering if DNS Round Robin would work with my setup?

I know that DNS Round Robin is not a good option because it wont detect if the server is down, (more manual work for the administrators) but thats fine, if we find out that the Clients can't connect we can manualy configure so the traffic goes from Server01 to Server02.

how about the OWA and other things like ECP, will DNS Round Robin notice that one of the Virtual Directories is down?

can I set up DNS Round robin with my configuration? and a good guide for it if someone have?

Thank alot for your Help

Hi

DNS Round-robin is just 2 DNS entries with the same name but different targets.  There is no service detection at all with DNS it will just give out one of the target IPs to a requesting client on a round-robin basis.  If one of your servers goes down you would delete the DNS entry for it and the other one will be used.

So yes you can set up DNS RR but there is a bit of an administrative overhead in the case of a failure or maintenance.

Steve

Hi,

DNS round robin typically refers to a method of load balancing the results of the DNS query: the first client connection request receives the first record, the second query receives the second record, and so on. In each case, only one record is returned There is no intelligence behind this method to facilitate failoverpurely a connection-distribution method.