AZ-104 Certification Practice Question #15

Question

Your company has three virtual machines (VMs) that are included in an availability set.
You try to resize one of the VMs, which returns an allocation failure message.
It is imperative that the VM is resized.
Which of the following actions should you take?

Accepted Answer

When virtual machines are deployed in an availability set, they are bound to a specific physical hardware cluster to ensure update and fault domain isolation. If you attempt to resize one VM and receive an allocation failure, it indicates that the current physical hardware cluster hosting the availability set does not have sufficient resources or does not support the new VM size. To resolve this, you must stop (deallocate) all three VMs in the availability set. Once all VMs are stopped, their allocation to the original cluster is released, allowing Azure to redeploy and start the resized VM (and the remaining VMs) on a different physical cluster that has the required capacity and supports the new size.

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