Solved

Installing CAS array

Posted on 2014-02-25
3
142 Views
Last Modified: 2014-03-07
I have about 200 user on Exchange 2010.  I have one CAS box.  I want to install new CAS server and setup CAS array.  I understand I need to install NLB on both of my CAS servers.  My question are:

1- Will I need to reboot my current CAS server?
2- is there a down time expected?
3- How should I plan this so it has minimal impact to users?
4- How should I roll out the new CAS array after I built it to all Outlook users?

Thanks
0
Comment
Question by:FundFire
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 63

Accepted Solution

by:
Simon Butler (Sembee) earned 500 total points
ID: 39886775
First - you do not have to use WNLB to use a CAS array. They are completely independent of each other and I would suggest that you deploy the CAS Array right now, so that clients start to pick it up.
Second, deploying a CAS Array will have no effect on the users, because they will not use it by default. To get the users on to the CAS Array address you need to repair the Outlook profile once it has been setup. So that means every client needs to be touched. There are no automatic ways to get it implemented.
Third, WNLB sucks. The Exchange product team do not recommend that it is used, and instead you should use a hardware load balancer. Do you have the CAS on a separate server? If so, I would drop the plan you have, put the CAS roles on to the mailbox servers and spend the money on a hardware load balancer instead of additional Exchange and Windows licences.

If you insist on using WNLB, there will be downtime because the network stack needs to be completely reconfigured and most people will fail to get it to work the first time.

Simon.
0
 

Author Comment

by:FundFire
ID: 39887014
Well, I am don't have money to go with hardware load balancer and I planning to go with Windows.  I would like to know know installing NLB on the existing CAS server will be OK? Or I will create havoc.

Thanks
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39887630
If you haven't already bought the Exchange and Windows licence, that is well over the cost of a load balancer. You can also go free with Zen Load Balancer.

WNLB causes a lot of problems, which is why the Exchange product team does not recommend its use.

Simon.
0

Featured Post

Office 365 Training for IT Pros

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

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

Read this checklist to learn more about the 15 things you should never include in an email signature.
This article explains how to install and use the NTBackup utility that comes with Windows Server.
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…
This video discusses moving either the default database or any database to a new volume.
Suggested Courses

626 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