Can VMs in an available set belong to different virtual networks?

Question

Pretty much what the title says. When I add VMs to an available set, do the VMs have to be in the same virtual network?

Answer 1

Hello @XJ ,

No, you cannot add VMs from different Virtual Networks in an Availability set. You can only add a VM to an availability set when it's created and it will not allow to add an existing availability set if it contains VMs from another Virtual Network. It will prompt you to select the Virtual Network where the existing VMs reside and you will receive a warning as shown below:

For more information on availability sets, please refer:
https://learn.microsoft.com/en-us/azure/virtual-machines/availability#availability-sets
https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-network-interface-vm#constraints

Kindly let us know if the above helps or you need further assistance on this issue.

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Answer 2

virtual-network-network-interface-vm

You will find the solution to your problem in above link.

Please marked as Answered if this is helps you