Hello, you can also use "Invoke-Nassh" cmdlet to pass sdcli commands to filer.
Invoke-NaSsh " your sdcli command"
For more help on this cmdlet you can type in.
Get-Help Invoke-Nassh -detailed
Using Windows FailoverClusters module you can add the available disk to cluster as below.
Get-ClusterAvailableDisk | Add-ClusterDisk