question

eg1995-5273 avatar image
0 Votes"
eg1995-5273 asked KyleXu-MSFT commented

exchange server dag on azure

dears,

i have on my onprem DC 2 exchange servers in DAG and i want to extend it to another site.
i already have on azure site to site VPN and a domain controller?
is it feasible or recommended to host two new exchange servers in the same DAG?

i see that exchange is supported on Azure but i need to know if it is from a networking perspective and my onpremises site falls down how the exchnage on azure vms will start sending and receiving emails?

office-exchange-server-mailflowazure-virtual-networkoffice-exchange-server-ha
· 1
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

@eg1995-5273
I am writing here to confirm with you any update about this thread now?
If the suggestion below helps, please be free to accept it as an answer for helping more people.

0 Votes 0 ·
AndyDavid avatar image
0 Votes"
AndyDavid answered

It is supported, yes:
https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/server-software-support#microsoft-exchange

However there a lot of considerations:

https://docs.microsoft.com/en-us/exchange/plan-and-deploy/deploy-new-installations/create-azure-test-environments?view=exchserver-2019
https://docs.microsoft.com/en-us/exchange/high-availability/manage-ha/azure-vms-as-dag-witness-servers?view=exchserver-2019

Note that you would need your AD forest domain controllers in Azure as well.

Personally, I would never do this. I dont see the value stretching the DAG to Azure. Not only do you have to account for all the networking, you also have to change DNS and transport routing.


5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

KyleXu-MSFT avatar image
0 Votes"
KyleXu-MSFT answered

@eg1995-5273

If you have deploy the site relationship correct. You will could add them into exist DAG. Please make sure all DAG member on installed the same OS.

i see that exchange is supported on Azure but i need to know if it is from a networking perspective and my onpremises site falls down how the exchnage on azure vms will start sending and receiving emails?

Theoretically, if one of the sites crashes, the DAG can continue to work on the other site. But, this requires relatively high network quality

Personally, I would suggest you consider Exchange online, which is more stable and easier to manage.


If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.


5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.