Get Fault Domain Count of Azure Availability Set Using PowerShell

The fault domain in the Azure Availability set describes the VMs in the availability set that share the common Power, Storage, network switch, etc. If there is a failure in the fault domain then all the resources in the fault domain will become unavailable.

Before running the command make sure that you are connected to the Azure Cloud (if not use ConnectAzAccount) and proper azure subscription (Set-AzContext to set the Azure subscription)

$availablityset = Get-AzAvailabilitySet -ResourceGroupName
ResourceGroupName -Name AvailabilitySetName

To get the Fault domain countm

$availablityset.PlatformFaultDomainCount

Output