Add warning to Azure Portal ARM Mover/update documentation when moving attached NICs between Resource Groups with ARM Mover

Question

Raising this request off the back of support ticket #2409030050001303 which has more details.

We have confirmed behaviour that when moving multiple NICs attached to a VM between resource Groups, they are detached from the VM as expected but not guaranteed to be re-attached to the VM in the same order. For some workloads this NIC's changing attachment order causes issues as older linux machines that don't use udev and some virtual network appliances (eg FortiGate firewalls) don't keep track of which NIC is which logical interface, and can lead to outages as the NIC the device is expecting is not the correct one. EG: https://community.fortinet.com/t5/Support-Forum/Fortigate-Interface-order/m-p/228417

This behaviour does not appear to be documented anywhere and the ARM Mover does not warn users that this can happen.

Answer 1

Hi @ecstatic-shamir

Thanks for raising this attention. I'll be sure to elevate this to right audience. Getting a banner in the Azure portal won't be instantaneous but adding a warning to documentation is easily doable.