Azure PowerShell: How to verify that the input Storage Account belongs to some Subscription

Question

How can i verify that some Storage Account name (received as input) belongs to some specific subscription

$storageAccountName = <something from input>
$storageAccountKey = <something from input>

$subscriptionName = "MySubscription"
$subscription = Get-AzureSubscription -SubscriptionName $subscriptionName

$StorageAccountContext = New-AzureStorageContext -StorageAccountName $storageAccountName -StorageAccountKey $storageAccountKey 

Now what?

how can i verify that the given storage account really belongs to this specific subscription?

(In case it doesn't i want to exit the script and now allow to continue.)

Answer 1

For me the answer to this is: Which resource group is it in, and in which subscription is the resource group then located:

$sa = Get-AzureRmStorageAccount -Name <input storage account name>

$sa
StorageAccountName ResourceGroupName Location   SkuName     Kind      AccessTier CreationTime        ProvisioningState EnableHttpsTrafficOnly
------------------ ----------------- --------   -------     ----      ---------- ------------        ----------------- ----------------------
sa001           rg080        westeurope StandardLRS StorageV2 Hot        02/09/2019 15:16:15 Succeeded         False

Get-AzureRmResourceGroup -Name $sa.ResourceGroupName -Location $sa.Location


ResourceGroupName : rg080
Location          : westeurope
ProvisioningState : Succeeded

ResourceId        : /subscriptions/<SUBSCRIPTION_ID>/resourceGroups/rg080

From there on you will be able to match the resourceid with the subscriptionid that you can find from

get-azurermsubscription

Something like so:

(Get-AzureRmResourceGroup -Name $sa.ResourceGroupName -Location $sa.Location).ResourceId.Split('/')[2] -like (Get-AzureRmSubscription | where name -like $subscriptionName).SubscriptionId

Answer 2

Acccording to my test, we can get all the storage account name in one subscription then we ensure if these names contain the name you provide. For example:

Connect-AzAccount 
$SubscriptionName=""
$Subscription=Get-AzSubscription -SubscriptionName  
Select-AzSubscription -Subscription $Subscription

#get all storage account name in the subscription 
$name = Get-AzStorageAccount | Select-Object StorageAccountName


$StorageAccountName="test" 

$value=$name.StorageAccountName.IndexOf($StorageAccountName)

if($value -ne -1) {
   Write-Host " exist"
}else {
   Write-Host "does not exist"
}

Update