functions/Get-AzSRTotalDiskSizePerVM.ps1
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<#
.SYNOPSIS Returns a list of all VMs with the sum of managed disk space allocated to them .DESCRIPTION Queries every managed disk within a subscription and returns a grouped list per virtual machine. This includes VM name and the total amount of managed disk space this vm has allocated. .PARAMETER SubscriptionId The SubscriptionId of the target subscription .EXAMPLE Get-AzSRTotalDiskSizePerVM -SubscriptionId nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnn .EXAMPLE Get-AzSRSubscription | Get-AzSRTotalDiskSizePerVM .NOTES Copyright: (c) 2018 Fabian Bader License: MIT https://opensource.org/licenses/MIT #> function Get-AzSRTotalDiskSizePerVM { [CmdletBinding()] param( [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)] [ValidateScript( { try { [System.Guid]::Parse($_) | Out-Null $true } catch { $false } } )] [string]$SubscriptionId ) #region Get Disks in subscription # https://docs.microsoft.com/en-us/rest/api/compute/disks/list Begin { #region Get AccessToken try { $AccessToken = Get-AzureRmCachedAccessToken $LoginHeader = @{ 'authorization' = "Bearer $AccessToken" } } catch { throw $($_.Exception.Message) } #endregion } Process { #region Normalize UUID $SubscriptionId = [System.Guid]::Parse($SubscriptionId).Guid #endregion #region Prepare and execute REST method $uri = "https://management.azure.com/subscriptions/$SubscriptionId/providers/Microsoft.Compute/disks?api-version=2017-03-30" $params = @{ ContentType = 'application/x-www-form-urlencoded' Headers = $LoginHeader Method = 'Get' URI = $uri } $Response = Invoke-RestMethod @params #endregion #region Get information about the disk size (MB) and VM name $DisksProperties = $Response.value | ForEach-Object { # Ignore disks without a managing VM if ($_.managedBy) { New-Object psobject -Property @{ "diskSizeGB" = ([int]($_.properties.diskSizeGB)) "CostCenter" = $_.tags.CostCenter "BusinessService" = $_.tags.BusinessService "managedBy" = $_.managedBy "vmName" = ($_.managedBy -replace '^.*virtualMachines/' ) } } } #endregion #region Consolidate the data that there is only the sum of disksize (GB) per VM name $DisksProperties | Group-Object -Property "vmName" | ForEach-Object { New-Object psobject -Property @{ 'VMName' = $_.Name 'allocatedDiskSizeGB' = ($_.Group | Measure-Object 'diskSizeGB' -Sum).Sum } } #endregion } End { # Nothing to cleanup } } |