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CAS/HUB NLB Question

Hi All,

is it normal that all RPC connections to our CAS servers are to a single server of the 2 that we have? We have NLB configured...

Exchange server version 2010.

Thanks
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David F.
Asked:
David F.
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2 Solutions
 
David F.Author Commented:
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Peter HutchisonSenior Network Systems SpecialistCommented:
Do you have a Client access array set up to load balance RPC connections?
Get-ClientAccessArray - to view setup
New-ClientAccessArray - to setup a new array.
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David F.Author Commented:
Yes Peter I have CAS array configured. All was working fine but after the summer many of our outlook users are very slow...

Are slow moving between folders, searching, etc...I have tried outlook /safe but same behaviour...

I think that is because windows updates...This is the only change in the servers that has been done.

Do you know how could investigate what is happening?
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MASTechnical Department HeadCommented:
FYI NLB is not supported by Microsoft Exchange Team.
If you want to continue with NLB you have to point your VIP of NLB to the fqdn of the cas array.
You will get the FQDN by the below command
Get-ClientAccessArray | fl name,fqdn

Open in new window


Did you check your server memory usage?
You have to size properly based on this.
https://blogs.technet.microsoft.com/exchange/2009/11/09/exchange-2010-server-role-requirements-calculator/
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David F.Author Commented:
NLB has been running well for over 3 years...but past summer we have installed MS updates on the servers and now we have all this problems.

Memory usage on both CAS servers are: 80% aprox. Is this Ok?

Any help would be apreciated...
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MASTechnical Department HeadCommented:
I believe this can be closed.
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