Azure Stack HCI version 22H2 supports inline fault domain and resiliency changes for scaling-out Azure Stack HCI cluster from two nodes to three-node+ cluster.
- The new node must be installed with an operating system same as the cluster. In this case, it should have Azure Stack HCI version 22H2 operating system.
- Only two-way to three-way mirror volume resiliency is supported for cluster expansion.
- Create an Azure Stack HCI cluster with two nodes. Check the resiliency for volumes using the following command:Get-VirtualDisk | Select NumberOfDataCopies, FriendlyName To view the volume resiliency on the Windows Admin Center, select the cluster name and click. All volumes must have a two-way mirror resiliency.
- Expand the cluster (add one (or more) new nodes) using the following command:Add-ClusterNode -Name <nodename>
- Convert the volume resiliency from two-way to three-way mirror using the following command:Set-VirtualDisk -FriendlyName <name> -NumberOfDataCopies 3 After running this command, check the cluster name and click Needs repair. You can also monitor the status by using the Get-StorageJob command on the nodes.. The volume status will show as
After converting all the volumes:
For more details, visit Single server scale-out for Azure Stack HCI version 22H2 - Azure Stack HCI | Microsoft Learn.