Exchange Server 2013 NLB Best Practice


Exchange Server 2013 NLB Best Practice

Sometimes when we don’t have Hardware Load balancer to configure array for the Client Access server we move to the next option of using windows network load balancer for high availability. While performing the patching over the CAS server we need to perform rebooting the server. This may leads to impact to the end user since the connection needs to be moved to the next CAS Server and may result to get reconnected again which will cause to prompt user name and password sometimes or it prompt “Outlook got disconnected”

In order to avoid the above behavior the best practice that can be followed for Network Load Balance

1. Open the Exchange management shell and run the following command providing the Exchange CAS Server Name

Get-Counter “\MSExchange RpcClientAccess\User Count” -ComputerName <CAS Server Name>
Get-Counter “\MSExchange OWA\Current Unique Users” -ComputerName <CAS Server Name>

2. Open the Windows Network LoadBalancer and perform drain-stop

3. Verify again on executing the same command

Get-Counter “\MSExchange RpcClientAccess\User Count” -ComputerName <CAS Server Name>
Get-Counter “\MSExchange OWA\Current Unique Users” -ComputerName <CAS Server Name>

4.  Stop the Microsoft Exchange RPC Client Access service (MSExchangeRPC)

5. Finally Reboot the server

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About Raji Subramanian

Nothing great to say about me...Just want to share my knowledge for others that will be useful at any moment of time when they stuck in critical issue....
This entry was posted in Client Access Server 2013, Commands, Exchange Server, Exchange Server 2013, Exchange Troubleshooting and tagged , , . Bookmark the permalink.

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