PowerShell Script to Export Used Capacity of Azure Storage Accounts in a Subscription.ps1

Author: vishalk9040

Storage/Powershell/PowerShell Script to Export Used Capacity of Azure Storage Accounts in a Subscription.ps1

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+#This PowerShell script will help you to export Used Capacity of Azure Storage Accounts in a Subscription.
+
+#Disclaimer
+#By using the following materials or sample code you agree to be bound by the license terms below 
+#and the Microsoft Partner Program Agreement the terms of which are incorporated herein by this reference. 
+#These license terms are an agreement between Microsoft Corporation (or, if applicable based on where you 
+#are located, one of its affiliates) and you. Any materials (other than sample code) we provide to you 
+#are for your internal use only. Any sample code is provided for the purpose of illustration only and is 
+#not intended to be used in a production environment. We grant you a nonexclusive, royalty-free right to 
+#use and modify the sample code and to reproduce and distribute the object code form of the sample code, 
+#provided that you agree: (i) to not use Microsoft’s name, logo, or trademarks to market your software product 
+#in which the sample code is embedded; (ii) to include a valid copyright notice on your software product in 
+#which the sample code is embedded; (iii) to provide on behalf of and for the benefit of your subcontractors 
+#a disclaimer of warranties, exclusion of liability for indirect and consequential damages and a reasonable 
+#limitation of liability; and (iv) to indemnify, hold harmless, and defend Microsoft, its affiliates and 
+#suppliers from and against any third party claims or lawsuits, including attorneys’ fees, that arise or result 
+#from the use or distribution of the sample code."
+
+#Used Capacity in MB
+
+# Login to Azure
+Connect-AzAccount
+
+# Set your subscription (replace with your SubscriptionId or Name)
+$subscriptionId = "<SubscriptionId>"   # or use Subscription Name
+
+# Set the subscription context
+Set-AzContext -SubscriptionId $subscriptionId | Out-Null
+$currentSub = (Get-AzSubscription -SubscriptionId $subscriptionId).Name
+
+# Prepare output array
+$results = @()
+
+# Get all resource groups in the subscription
+$resourceGroups = Get-AzResourceGroup
+
+foreach ($rg in $resourceGroups) {
+    $currentRG = $rg.ResourceGroupName
+
+    # Get all storage accounts in the resource group
+    $storageAccounts = Get-AzStorageAccount -ResourceGroupName $currentRG
+
+    foreach ($sa in $storageAccounts) {
+        $storageAccount = $sa.StorageAccountName
+        $CurrentSAID = $sa.Id
+
+        # Get UsedCapacity metric (latest datapoint)
+        $metric = Get-AzMetric -ResourceId $CurrentSAID -MetricName "UsedCapacity"
+
+        $latest = $metric.Data | Sort-Object TimeStamp -Descending | Select-Object -First 1
+
+        if ($latest.Total -ne $null) {
+            $usedCapacityMB = ($latest.Total / 1MB)   # 
+        } elseif ($latest.Average -ne $null) {
+            $usedCapacityMB = ($latest.Average / 1MB) # 
+        } else {
+            $usedCapacityMB = 0
+        }
+
+        # Add result to array
+        $results += [pscustomobject]@{
+            Subscription    = $currentSub
+            ResourceGroup   = $currentRG
+            StorageAccount  = $storageAccount
+            UsedCapacityMB  = $usedCapacityMB  # 
+        }
+    }
+}
+
+# Export results to CSV
+$results | Export-Csv -Path ".\StorageAccountsUsedCapacity.csv" -NoTypeInformation
+Write-Host "Export completed: .\StorageAccountsUsedCapacity.csv"
+
+
+#Used Capacity in GB
+
+# Login to Azure
+Connect-AzAccount
+
+# Set your subscription (replace with your SubscriptionId or Name)
+$subscriptionId = "<SubscriptionId>"   # or use Subscription Name
+
+# Set the subscription context
+Set-AzContext -SubscriptionId $subscriptionId | Out-Null
+$currentSub = (Get-AzSubscription -SubscriptionId $subscriptionId).Name
+
+# Prepare output array
+$results = @()
+
+# Get all resource groups in the subscription
+$resourceGroups = Get-AzResourceGroup
+
+foreach ($rg in $resourceGroups) {
+    $currentRG = $rg.ResourceGroupName
+
+    # Get all storage accounts in the resource group
+    $storageAccounts = Get-AzStorageAccount -ResourceGroupName $currentRG
+
+    foreach ($sa in $storageAccounts) {
+        $storageAccount = $sa.StorageAccountName
+        $CurrentSAID = $sa.Id
+
+        # Get UsedCapacity metric (latest datapoint)
+        $metric = Get-AzMetric -ResourceId $CurrentSAID -MetricName "UsedCapacity"
+
+        $latest = $metric.Data | Sort-Object TimeStamp -Descending | Select-Object -First 1
+
+        if ($latest.Total -ne $null) {
+            $usedCapacityGB = ($latest.Total / 1GB)   # ✅ no rounding
+        } elseif ($latest.Average -ne $null) {
+            $usedCapacityGB = ($latest.Average / 1GB) #
+        } else {
+            $usedCapacityGB = 0
+        }
+
+        # Add result to array
+        $results += [pscustomobject]@{
+            Subscription    = $currentSub
+            ResourceGroup   = $currentRG
+            StorageAccount  = $storageAccount
+            UsedCapacityGB  = $usedCapacityGB  # 
+        }
+    }
+}
+
+# Export results to CSV
+$results | Export-Csv -Path ".\StorageAccountsUsedCapacity.csv" -NoTypeInformation
+Write-Host "Export completed: .\StorageAccountsUsedCapacity.csv"
+
+