Wajeeh
Enthusiast
Enthusiast

Exchange_2016 DAG vmotion

Dear All,

We are having upcoming activity for Hardware Firmware upgrade and have a DAG setup also for exchange 2016. I am looking to understand/clarify if we can do vmotion of exchange node, OR this will cause a DB failover which is not needed.

because for two nodes, I need to do this 4 times:

- shift node 1 from physical host (perform firmware update)

-return node 1 to same physical host

- shift node 2 from physical host (perform firmware update

--return node 2 to same physical host

kindly share your experiences for this case for vmotion of exchange node part of DAG

regards,

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5 Replies
blazilla
Enthusiast
Enthusiast

Hello,

I have setup several DAGs for different customers and I usually set the “samesubnetdely“ to 2 seconds. The default is 1 second which can cause unwanted failovers.

You can change this by using this command:

cluster /prop samesubnetdelay=2000


You can check the success by using

cluster /prop

This will result in a list of all parameters.

Best regards Patrick https://www.vcloudnine.de
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NathanosBlightc
Commander
Commander

Look at the following link on page 36, it's about the configuration of vSphere vMotion for Exchange DAG

https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/solutions/business-critical-apps/e...

Please mark my comment as the Correct Answer if this solution resolved your problem
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Wajeeh
Enthusiast
Enthusiast

Hello,

Thank you for response. Some places I have seen other then parameter you have specified, people are suggesting for these also, what is your opinion:

cluster /cluster:yourDAGname /prop SameSubnetThreshold=10

cluster /cluster:yourDAGname /prop CrossSubnetDelay=4000

cluster /cluster:yourDAGname /prop CrossSubnetThreshold=10

regards,

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Wajeeh
Enthusiast
Enthusiast

Kindly share if it is necessary to have 10GB nic for vmotion of exchange DAG? I don't remember seeing such requirement

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blazilla
Enthusiast
Enthusiast

Hi,

no, I don't think that this is a requirement.

Best regards Patrick https://www.vcloudnine.de
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