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Convert append blobs and page blobs into block blobs

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To convert blobs, copy them to a new location by using PowerShell, Azure CLI, or AzCopy. You'll use command parameters to ensure that the destination blob is a block blob. All metadata from the source blob is copied to the destination blob.

Convert append and page blobs

  1. Open a Windows PowerShell command window.

  2. Sign in to your Azure subscription with the Connect-AzAccount command and follow the on-screen directions.

    Connect-AzAccount

  3. If your identity is associated with more than one subscription, then set your active subscription to subscription of the storage account which contains the append or page blobs.

    $context = Get-AzSubscription -SubscriptionId '<subscription-id>'
Set-AzContext $context

    Replace the <subscription-id> placeholder value with the ID of your subscription.

  4. Create the storage account context by using the New-AzStorageContext command. Include the -UseConnectedAccount parameter so that data operations will be performed using your Microsoft Entra credentials.

    $ctx = New-AzStorageContext -StorageAccountName '<storage account name>' -UseConnectedAccount

  5. Use the Copy-AzStorageBlob command and set the -DestBlobType parameter to Block.

    $containerName = '<source container name>'
$srcblobName = '<source append or page blob name>'
$destcontainerName = '<destination container name>'
$destblobName = '<destination block blob name>'
$destTier = '<destination block blob tier>'

Copy-AzStorageBlob -SrcContainer $containerName -SrcBlob $srcblobName -Context $ctx -DestContainer $destcontainerName -DestBlob $destblobName -DestContext $ctx -DestBlobType Block -StandardBlobTier $destTier

  6. To copy a page blob snapshot to block blob, use the Get-AzStorageBlob and Copy-AzStorageBlob command with -DestBlobType parameter as Block.

    $containerName = '<source container name>'
$srcPageBlobName = '<source page blob name>'
$srcPageBlobSnapshotTime = '<snapshot time of source page blob>'
$destContainerName = '<destination container name>'
$destBlobName = '<destination block blob name>'
$destTier = '<destination block blob tier>'

 Get-AzStorageBlob -Container $containerName -Blob $srcPageBlobName -SnapshotTime $srcPageBlobSnapshotTime -Context $ctx | Copy-AzStorageBlob -DestContainer $destContainerName -DestBlob $destBlobName -DestBlobType block -StandardBlobTier $destTier -DestContext $ctx

    Tip

    The -StandardBlobTier parameter is optional. If you omit that parameter, then the destination blob infers its tier from the default account access tier setting. To change the tier after you've created a block blob, see Change a blob's tier.

See also