Solved

Exchange 2010 - 2 server CAS/HUB/MBX HA

Posted on 2011-02-15
4
1,015 Views
Last Modified: 2012-05-11
Client has a two-server Exchange 2010 SP1 environment. Both servers has all three roles installed: Client Access, Hub and Mailbox.

The DAG works beautifully and this makes the Mailbox role highly available between the two servers.

Now, what about the Client Access roles? Any way to make the CAS highly available without implementing a CAS array?

We tried DNS round robin - that didn't work. When we take down a specific server offline for maintenance, Outlook sessions attempt and fail to connect to that specific CAS server. That would lead me to believe that a hardware load balancer would not work in this situation either.
0
Comment
Question by:MakingBiscuits
4 Comments
 
LVL 5

Expert Comment

by:LLMorrisson
Comment Utility
Have you tried an NLB cluster? Pretty easy to set up and works on Windows out of the box.
0
 
LVL 7

Accepted Solution

by:
viveksahu earned 500 total points
Comment Utility
Hi,

You can use the CAS array with Network Load Balancing (NLB), but if the server  has all of the roles and is also a DAG member, then you must use an external load balancer. Using NLB on the same server as the DAG is not supported.

Thanks
0
 
LVL 74

Expert Comment

by:Glen Knight
Comment Utility
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
0

Featured Post

Do email signature updates give you a headache?

Do you feel like you are constantly making changes to email signatures? Are the images not formatting how you want them to? Want high-quality HTML signatures on all devices, including on mobiles and Macs? Then, let Exclaimer solve all your email signature problems today.

Join & Write a Comment

Easy CSR creation in Exchange 2007,2010 and 2013
Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
This video discusses moving either the default database or any database to a new volume.

772 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now