question

Hi @Surbhi-3651,

There are a few options that could be available to you for migrating VMs between Azure Stack HCI clusters. If these clusters are both running the same operating system version, you could do any of the following:

• Create a cluster set so you could move the VMs between clusters. This would be a good option if you plan to keep both clusters running. This document describes how to do this - https://docs.microsoft.com/en-us/azure-stack/hci/deploy/cluster-set

• You should also be able to live migrate the VMs between the clusters. To do this,
  • Identify a node on the source and destination clusters to use certificates for authentication of live migration. Verify live migrations work with un-clustered VMs between the 2 nodes. https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/manage/use-live-migration-without-failover-clustering-to-move-a-virtual-machine
  • Un-cluster the vm on the source.
  • Live storage migrate and live migrate the VMs between the source and destination nodes.
  • Cluster the VM on the destination system.

• If you don't mind a downtime, you can also migrate the VMs using the steps in this document - https://docs.microsoft.com/en-us/azure-stack/hci/deploy/migrate-cluster-new-hardware. These are the steps that would be required if you aren't using equivalent operating systems (such as Windows Server 2019 HCI to Azure Stack HCI OS).

Hope this helps!
Trent