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AJF-7918 avatar image
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AJF-7918 asked BruceZhang-MSFT answered

redundant IIS

About IIS, lets say i got several websites at one IIS server. But this means, when the server goes down, the sites aint available.
So i think i should make them for instance redundant. But how?
Many thanks for a reply.

windows-server-iis
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sreejukg avatar image
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sreejukg answered

You can have two servers, both running IIS, and deploy your web applications in both servers. Use load balancers to route traffice between servers. Some reference articles below.

https://docs.microsoft.com/en-us/iis/extensions/configuring-application-request-routing-arr/achieving-high-availability-and-scalability-arr-and-nlb
https://devblogs.microsoft.com/azuregov/configuring-high-availability-for-iaas-virtual-machines/

Hope this helps

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BruceZhang-MSFT avatar image
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BruceZhang-MSFT answered

Hi @AJF-7918 ,

To prevent server goes down and make IIS highly available, I would recommend you to use load balancing and create an IIS farm.

IIS ARR will automatically detect if a server in the server farm is available and proxy the request to a healthy server if it is unavailable.
Configure health check monitoring



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Best regards,
Bruce Zhang


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