copy adls gen2 blobs across subscriptions using powershell

Blob means files in this context.

I think your code can actually work if you set the -DestBlob.

EDIT: You can't copy a whole folder with the Start-AzStorageBlobCopy.

This is a sample code that retrieves all containers from storage account 1, and then creates the non-existing ones on storage account 2.

It then queries all files within the current container and copies them from SA1 to SA2.

Attention! the -Force option is included, so overwriting is possible. If you want to avoid this, just delete it.

#connect
Connect-AzAccount

#get all relevant information from the source
Set-AzContext -Subscription "SUB1"
$SourceResourceGroup = "SUB1_RG"
$SourceStorageAccount = "SUB1_SA"
$SourceStorageKey = (Get-AzStorageAccountKey -ResourceGroupName $SourceResourceGroup -Name $SourceStorageAccount)[0].Value
$SourceStorageContext = New-AZStorageContext -StorageAccountName $SourceStorageAccount -StorageAccountKey $SourceStorageKey

#get all relevant information from the destination
Set-AzContext -Subscription "SUB2"
$DestResourceGroup = "SUB2_RG"
$DestStorageAccount = "SUB2_SA"
$DestStorageKey = (Get-AzStorageAccountKey -ResourceGroupName $DestResourceGroup -Name $DestStorageAccount)[0].Value
$DestStorageContext = New-AZStorageContext -StorageAccountName $DestStorageAccount -StorageAccountKey $DestStorageKey

#get all container from the source
$Containers = Get-AZStorageContainer -Context $SourceStorageContext

#do something with all container
foreach ($Container in $Containers) {
    $ContainerName = $Container.Name
    #Generate new container if does not exist
    if (!((Get-AZStorageContainer -Context $DestStorageContext) | Where-Object { $_.Name -eq $ContainerName })) {   
        Write-Output "Creating new container $ContainerName"
        New-AZStorageContainer -Name $ContainerName -Permission Off -Context $DestStorageContext -ErrorAction Stop
    }

    #get all file
    $Blobs = Get-AZStorageBlob -Context $SourceStorageContext -Container $ContainerName

    #Copy all file with overwrite! just delete the "-Force" if you don't want to overwrite your existing files
    foreach ($Blob in $Blobs) {
        $BlobName = $Blob.Name
        Write-Output "Copying $BlobName from $ContainerName"
        Start-AzStorageBlobCopy -Context $SourceStorageContext -SrcContainer $ContainerName -SrcBlob $BlobName -DestContext $DestStorageContext -DestContainer $ContainerName -DestBlob $BlobName -Force -ErrorAction SilentlyContinue
    }
}

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